Changing valve seals - putting air into cylinder - hear air leaking - help
I have my compressor and I placed the piston at just before TDC on the
compression stroke. I put my air adaptor in the spark plug hole and applied air and I'm hearing leaking. I tried another cylinder and I'm hearing leaking. The air is only at about 40 psi cuz I haven't gotten to crank the compressor up again yet. Previously I took the engine/jeep to a mechanic who told me I had 150 psi across all cylinders. Is there something wrong with this picture? If I have that good of compression per cylinder should it not be leaking when I apply air from the compressor? Is it possible I have a blown head gasket across all cylinders? Why do I think that. I'm burning oil and it appears to happen when I'm at idle for a few minutes and then I press on the gas. This indicates or points to, I've learned, the valve seals which I why I'm going about changing them. Could a blown head gasket across all cylinders produce the same effect? Thanks for any response and help. Bill |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Ok, I pluged all the other cylinders with spark plugs and am working with #1
cylinder. I hear the air leaking but cannot determine where it's leaking to. I don't feel anything at the tail pipe. I don't see bubbles in the radiator water. I can't feel anything at the dip stick. The only thing I haven't looked at yet is the intake. The only thing I know of that is. I'm going to look at that now. Maybe my valves are stuck open? If that were true I should be able to feel it somewhere, either intake or exhaust, yes? Bill "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1b1f$g4ioc$1@ID-193866.news.uni-berlin.de... > I have my compressor and I placed the piston at just before TDC on the > compression stroke. I put my air adaptor in the spark plug hole and applied > air and I'm hearing leaking. I tried another cylinder and I'm hearing > leaking. The air is only at about 40 psi cuz I haven't gotten to crank the > compressor up again yet. > > Previously I took the engine/jeep to a mechanic who told me I had 150 psi > across all cylinders. Is there something wrong with this picture? If I > have that good of compression per cylinder should it not be leaking when I > apply air from the compressor? > > Is it possible I have a blown head gasket across all cylinders? Why do I > think that. I'm burning oil and it appears to happen when I'm at idle for a > few minutes and then I press on the gas. This indicates or points to, I've > learned, the valve seals which I why I'm going about changing them. Could a > blown head gasket across all cylinders produce the same effect? > > Thanks for any response and help. > > Bill > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Ok, I pluged all the other cylinders with spark plugs and am working with #1
cylinder. I hear the air leaking but cannot determine where it's leaking to. I don't feel anything at the tail pipe. I don't see bubbles in the radiator water. I can't feel anything at the dip stick. The only thing I haven't looked at yet is the intake. The only thing I know of that is. I'm going to look at that now. Maybe my valves are stuck open? If that were true I should be able to feel it somewhere, either intake or exhaust, yes? Bill "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1b1f$g4ioc$1@ID-193866.news.uni-berlin.de... > I have my compressor and I placed the piston at just before TDC on the > compression stroke. I put my air adaptor in the spark plug hole and applied > air and I'm hearing leaking. I tried another cylinder and I'm hearing > leaking. The air is only at about 40 psi cuz I haven't gotten to crank the > compressor up again yet. > > Previously I took the engine/jeep to a mechanic who told me I had 150 psi > across all cylinders. Is there something wrong with this picture? If I > have that good of compression per cylinder should it not be leaking when I > apply air from the compressor? > > Is it possible I have a blown head gasket across all cylinders? Why do I > think that. I'm burning oil and it appears to happen when I'm at idle for a > few minutes and then I press on the gas. This indicates or points to, I've > learned, the valve seals which I why I'm going about changing them. Could a > blown head gasket across all cylinders produce the same effect? > > Thanks for any response and help. > > Bill > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Ok, I pluged all the other cylinders with spark plugs and am working with #1
cylinder. I hear the air leaking but cannot determine where it's leaking to. I don't feel anything at the tail pipe. I don't see bubbles in the radiator water. I can't feel anything at the dip stick. The only thing I haven't looked at yet is the intake. The only thing I know of that is. I'm going to look at that now. Maybe my valves are stuck open? If that were true I should be able to feel it somewhere, either intake or exhaust, yes? Bill "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1b1f$g4ioc$1@ID-193866.news.uni-berlin.de... > I have my compressor and I placed the piston at just before TDC on the > compression stroke. I put my air adaptor in the spark plug hole and applied > air and I'm hearing leaking. I tried another cylinder and I'm hearing > leaking. The air is only at about 40 psi cuz I haven't gotten to crank the > compressor up again yet. > > Previously I took the engine/jeep to a mechanic who told me I had 150 psi > across all cylinders. Is there something wrong with this picture? If I > have that good of compression per cylinder should it not be leaking when I > apply air from the compressor? > > Is it possible I have a blown head gasket across all cylinders? Why do I > think that. I'm burning oil and it appears to happen when I'm at idle for a > few minutes and then I press on the gas. This indicates or points to, I've > learned, the valve seals which I why I'm going about changing them. Could a > blown head gasket across all cylinders produce the same effect? > > Thanks for any response and help. > > Bill > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Well I put my valve cover back on, pluged all the spark plug holes, and
covered the holes in my valve cover. I'm hearing/feeling air though the pcv valve. This is due to rings, yes? Thanks, Bill "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1ciu$m4181$1@ID-193866.news.uni-berlin.de... > Ok, I pluged all the other cylinders with spark plugs and am working with #1 > cylinder. I hear the air leaking but cannot determine where it's leaking > to. I don't feel anything at the tail pipe. I don't see bubbles in the > radiator water. I can't feel anything at the dip stick. The only thing I > haven't looked at yet is the intake. The only thing I know of that is. > > I'm going to look at that now. > > Maybe my valves are stuck open? If that were true I should be able to feel > it somewhere, either intake or exhaust, yes? > > > Bill > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1b1f$g4ioc$1@ID-193866.news.uni-berlin.de... > > I have my compressor and I placed the piston at just before TDC on the > > compression stroke. I put my air adaptor in the spark plug hole and > applied > > air and I'm hearing leaking. I tried another cylinder and I'm hearing > > leaking. The air is only at about 40 psi cuz I haven't gotten to crank > the > > compressor up again yet. > > > > Previously I took the engine/jeep to a mechanic who told me I had 150 psi > > across all cylinders. Is there something wrong with this picture? If I > > have that good of compression per cylinder should it not be leaking when I > > apply air from the compressor? > > > > Is it possible I have a blown head gasket across all cylinders? Why do I > > think that. I'm burning oil and it appears to happen when I'm at idle for > a > > few minutes and then I press on the gas. This indicates or points to, > I've > > learned, the valve seals which I why I'm going about changing them. Could > a > > blown head gasket across all cylinders produce the same effect? > > > > Thanks for any response and help. > > > > Bill > > > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Well I put my valve cover back on, pluged all the spark plug holes, and
covered the holes in my valve cover. I'm hearing/feeling air though the pcv valve. This is due to rings, yes? Thanks, Bill "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1ciu$m4181$1@ID-193866.news.uni-berlin.de... > Ok, I pluged all the other cylinders with spark plugs and am working with #1 > cylinder. I hear the air leaking but cannot determine where it's leaking > to. I don't feel anything at the tail pipe. I don't see bubbles in the > radiator water. I can't feel anything at the dip stick. The only thing I > haven't looked at yet is the intake. The only thing I know of that is. > > I'm going to look at that now. > > Maybe my valves are stuck open? If that were true I should be able to feel > it somewhere, either intake or exhaust, yes? > > > Bill > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1b1f$g4ioc$1@ID-193866.news.uni-berlin.de... > > I have my compressor and I placed the piston at just before TDC on the > > compression stroke. I put my air adaptor in the spark plug hole and > applied > > air and I'm hearing leaking. I tried another cylinder and I'm hearing > > leaking. The air is only at about 40 psi cuz I haven't gotten to crank > the > > compressor up again yet. > > > > Previously I took the engine/jeep to a mechanic who told me I had 150 psi > > across all cylinders. Is there something wrong with this picture? If I > > have that good of compression per cylinder should it not be leaking when I > > apply air from the compressor? > > > > Is it possible I have a blown head gasket across all cylinders? Why do I > > think that. I'm burning oil and it appears to happen when I'm at idle for > a > > few minutes and then I press on the gas. This indicates or points to, > I've > > learned, the valve seals which I why I'm going about changing them. Could > a > > blown head gasket across all cylinders produce the same effect? > > > > Thanks for any response and help. > > > > Bill > > > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Well I put my valve cover back on, pluged all the spark plug holes, and
covered the holes in my valve cover. I'm hearing/feeling air though the pcv valve. This is due to rings, yes? Thanks, Bill "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1ciu$m4181$1@ID-193866.news.uni-berlin.de... > Ok, I pluged all the other cylinders with spark plugs and am working with #1 > cylinder. I hear the air leaking but cannot determine where it's leaking > to. I don't feel anything at the tail pipe. I don't see bubbles in the > radiator water. I can't feel anything at the dip stick. The only thing I > haven't looked at yet is the intake. The only thing I know of that is. > > I'm going to look at that now. > > Maybe my valves are stuck open? If that were true I should be able to feel > it somewhere, either intake or exhaust, yes? > > > Bill > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1b1f$g4ioc$1@ID-193866.news.uni-berlin.de... > > I have my compressor and I placed the piston at just before TDC on the > > compression stroke. I put my air adaptor in the spark plug hole and > applied > > air and I'm hearing leaking. I tried another cylinder and I'm hearing > > leaking. The air is only at about 40 psi cuz I haven't gotten to crank > the > > compressor up again yet. > > > > Previously I took the engine/jeep to a mechanic who told me I had 150 psi > > across all cylinders. Is there something wrong with this picture? If I > > have that good of compression per cylinder should it not be leaking when I > > apply air from the compressor? > > > > Is it possible I have a blown head gasket across all cylinders? Why do I > > think that. I'm burning oil and it appears to happen when I'm at idle for > a > > few minutes and then I press on the gas. This indicates or points to, > I've > > learned, the valve seals which I why I'm going about changing them. Could > a > > blown head gasket across all cylinders produce the same effect? > > > > Thanks for any response and help. > > > > Bill > > > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
On Sun, 25 Jan 2004 14:27:23 -0800, William Oliveri <wuji@bigvalley.net>
wrote: > valve. This is due to rings, yes? > > Thanks, > > Bill > probably! squirt some oil into the cylinder and turn the engine over a few turns (can be done by hand if necessary). -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
On Sun, 25 Jan 2004 14:27:23 -0800, William Oliveri <wuji@bigvalley.net>
wrote: > valve. This is due to rings, yes? > > Thanks, > > Bill > probably! squirt some oil into the cylinder and turn the engine over a few turns (can be done by hand if necessary). -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
On Sun, 25 Jan 2004 14:27:23 -0800, William Oliveri <wuji@bigvalley.net>
wrote: > valve. This is due to rings, yes? > > Thanks, > > Bill > probably! squirt some oil into the cylinder and turn the engine over a few turns (can be done by hand if necessary). -- Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Poured about a table spoon down #1, cranked it over a few times by hand
(found TDC twice) and tested again. Still I'm hearing the air. I should not be hearing air, right? It sounds like I'm filling a tank with air. Just to let you know, I'm finding the compression stroke by sticking my finger in the spark plug hole and turning the crank. When I feel pressure against my finger then I know I'm on the compression stroke and then look for the timing mark to reach TCD or just before. "Irish Redneck" <seeayeemm@hotmail.com> wrote in message news:opr2ct5tjcy2qpcc@netnews.insightbb.com... > On Sun, 25 Jan 2004 14:27:23 -0800, William Oliveri <wuji@bigvalley.net> > wrote: > > > > valve. This is due to rings, yes? > > > > Thanks, > > > > Bill > > > > probably! squirt some oil into the cylinder and turn the engine over a few > turns (can be done by hand if necessary). > > -- > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Poured about a table spoon down #1, cranked it over a few times by hand
(found TDC twice) and tested again. Still I'm hearing the air. I should not be hearing air, right? It sounds like I'm filling a tank with air. Just to let you know, I'm finding the compression stroke by sticking my finger in the spark plug hole and turning the crank. When I feel pressure against my finger then I know I'm on the compression stroke and then look for the timing mark to reach TCD or just before. "Irish Redneck" <seeayeemm@hotmail.com> wrote in message news:opr2ct5tjcy2qpcc@netnews.insightbb.com... > On Sun, 25 Jan 2004 14:27:23 -0800, William Oliveri <wuji@bigvalley.net> > wrote: > > > > valve. This is due to rings, yes? > > > > Thanks, > > > > Bill > > > > probably! squirt some oil into the cylinder and turn the engine over a few > turns (can be done by hand if necessary). > > -- > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Poured about a table spoon down #1, cranked it over a few times by hand
(found TDC twice) and tested again. Still I'm hearing the air. I should not be hearing air, right? It sounds like I'm filling a tank with air. Just to let you know, I'm finding the compression stroke by sticking my finger in the spark plug hole and turning the crank. When I feel pressure against my finger then I know I'm on the compression stroke and then look for the timing mark to reach TCD or just before. "Irish Redneck" <seeayeemm@hotmail.com> wrote in message news:opr2ct5tjcy2qpcc@netnews.insightbb.com... > On Sun, 25 Jan 2004 14:27:23 -0800, William Oliveri <wuji@bigvalley.net> > wrote: > > > > valve. This is due to rings, yes? > > > > Thanks, > > > > Bill > > > > probably! squirt some oil into the cylinder and turn the engine over a few > turns (can be done by hand if necessary). > > -- > Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/ |
Re: Changing valve seals - putting air into cylinder - hear air leaking- help
Yes, you hear lots of air, but as I remember I was able to change
the seal I'm working on before the compressor starts. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ William Oliveri wrote: > > Poured about a table spoon down #1, cranked it over a few times by hand > (found TDC twice) and tested again. Still I'm hearing the air. > > I should not be hearing air, right? It sounds like I'm filling a tank with > air. > > Just to let you know, I'm finding the compression stroke by sticking my > finger in the spark plug hole and turning the crank. When I feel pressure > against my finger then I know I'm on the compression stroke and then look > for the timing mark to reach TCD or just before. |
Re: Changing valve seals - putting air into cylinder - hear air leaking- help
Yes, you hear lots of air, but as I remember I was able to change
the seal I'm working on before the compressor starts. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ William Oliveri wrote: > > Poured about a table spoon down #1, cranked it over a few times by hand > (found TDC twice) and tested again. Still I'm hearing the air. > > I should not be hearing air, right? It sounds like I'm filling a tank with > air. > > Just to let you know, I'm finding the compression stroke by sticking my > finger in the spark plug hole and turning the crank. When I feel pressure > against my finger then I know I'm on the compression stroke and then look > for the timing mark to reach TCD or just before. |
Re: Changing valve seals - putting air into cylinder - hear air leaking- help
Yes, you hear lots of air, but as I remember I was able to change
the seal I'm working on before the compressor starts. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ William Oliveri wrote: > > Poured about a table spoon down #1, cranked it over a few times by hand > (found TDC twice) and tested again. Still I'm hearing the air. > > I should not be hearing air, right? It sounds like I'm filling a tank with > air. > > Just to let you know, I'm finding the compression stroke by sticking my > finger in the spark plug hole and turning the crank. When I feel pressure > against my finger then I know I'm on the compression stroke and then look > for the timing mark to reach TCD or just before. |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
So, am I worrying about nothing then? Just because I'm hearing air and
feeling air out the pcv valve hose then this is ok. In other words, the cylinder should not completely contain the air. This is normal? I'm freaking and thinking all the rings are bad because I hear air. Please correct me. Thanks, Bill "L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:401458E6.1AEEEF39@cox.net... > Yes, you hear lots of air, but as I remember I was able to change > the seal I'm working on before the compressor starts. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ > > William Oliveri wrote: > > > > Poured about a table spoon down #1, cranked it over a few times by hand > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > I should not be hearing air, right? It sounds like I'm filling a tank with > > air. > > > > Just to let you know, I'm finding the compression stroke by sticking my > > finger in the spark plug hole and turning the crank. When I feel pressure > > against my finger then I know I'm on the compression stroke and then look > > for the timing mark to reach TCD or just before. |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
So, am I worrying about nothing then? Just because I'm hearing air and
feeling air out the pcv valve hose then this is ok. In other words, the cylinder should not completely contain the air. This is normal? I'm freaking and thinking all the rings are bad because I hear air. Please correct me. Thanks, Bill "L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:401458E6.1AEEEF39@cox.net... > Yes, you hear lots of air, but as I remember I was able to change > the seal I'm working on before the compressor starts. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ > > William Oliveri wrote: > > > > Poured about a table spoon down #1, cranked it over a few times by hand > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > I should not be hearing air, right? It sounds like I'm filling a tank with > > air. > > > > Just to let you know, I'm finding the compression stroke by sticking my > > finger in the spark plug hole and turning the crank. When I feel pressure > > against my finger then I know I'm on the compression stroke and then look > > for the timing mark to reach TCD or just before. |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
So, am I worrying about nothing then? Just because I'm hearing air and
feeling air out the pcv valve hose then this is ok. In other words, the cylinder should not completely contain the air. This is normal? I'm freaking and thinking all the rings are bad because I hear air. Please correct me. Thanks, Bill "L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:401458E6.1AEEEF39@cox.net... > Yes, you hear lots of air, but as I remember I was able to change > the seal I'm working on before the compressor starts. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ > > William Oliveri wrote: > > > > Poured about a table spoon down #1, cranked it over a few times by hand > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > I should not be hearing air, right? It sounds like I'm filling a tank with > > air. > > > > Just to let you know, I'm finding the compression stroke by sticking my > > finger in the spark plug hole and turning the crank. When I feel pressure > > against my finger then I know I'm on the compression stroke and then look > > for the timing mark to reach TCD or just before. |
Re: Changing valve seals - putting air into cylinder - hear airleaking - help
Correct.
God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ William Oliveri wrote: > > So, am I worrying about nothing then? Just because I'm hearing air and > feeling air out the pcv valve hose then this is ok. In other words, the > cylinder should not completely contain the air. This is normal? I'm > freaking and thinking all the rings are bad because I hear air. Please > correct me. > > Thanks, > > Bill |
Re: Changing valve seals - putting air into cylinder - hear airleaking - help
Correct.
God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ William Oliveri wrote: > > So, am I worrying about nothing then? Just because I'm hearing air and > feeling air out the pcv valve hose then this is ok. In other words, the > cylinder should not completely contain the air. This is normal? I'm > freaking and thinking all the rings are bad because I hear air. Please > correct me. > > Thanks, > > Bill |
Re: Changing valve seals - putting air into cylinder - hear airleaking - help
Correct.
God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ William Oliveri wrote: > > So, am I worrying about nothing then? Just because I'm hearing air and > feeling air out the pcv valve hose then this is ok. In other words, the > cylinder should not completely contain the air. This is normal? I'm > freaking and thinking all the rings are bad because I hear air. Please > correct me. > > Thanks, > > Bill |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
You'll always get some leaking by the rings, even in a brand new engine.
There is a small gap of .020-.030" left where the ring ends almost come together. If you do a leakdown test as per my earlier post, it will tell you how much you are losing. A stock type rebuild will have as much as 8% leakdown when it is brand new. This doesn't mean that anything was done wrong, it's just the way it is. A racing engine will have less leakdown (usually 2-3% for a well built race engine) when the engine is new because they use tighter ring end gaps and a smoother bore finish when the engine is honed. Now if you hear a large rush of air coming out the tailpipe or intake and the valves are closed, then there is a problem. Also, your radiator shouldn't look like Old Faithful either. ;). Chris "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1n3r$munk5$1@ID-193866.news.uni-berlin.de... > So, am I worrying about nothing then? Just because I'm hearing air and > feeling air out the pcv valve hose then this is ok. In other words, the > cylinder should not completely contain the air. This is normal? I'm > freaking and thinking all the rings are bad because I hear air. Please > correct me. > > Thanks, > > Bill > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message > news:401458E6.1AEEEF39@cox.net... > > Yes, you hear lots of air, but as I remember I was able to change > > the seal I'm working on before the compressor starts. > > God Bless America, ßill O|||||||O > > mailto:-------------------- http://www.----------.com/ > > > > William Oliveri wrote: > > > > > > Poured about a table spoon down #1, cranked it over a few times by hand > > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > > > I should not be hearing air, right? It sounds like I'm filling a tank > with > > > air. > > > > > > Just to let you know, I'm finding the compression stroke by sticking my > > > finger in the spark plug hole and turning the crank. When I feel > pressure > > > against my finger then I know I'm on the compression stroke and then > look > > > for the timing mark to reach TCD or just before. > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
You'll always get some leaking by the rings, even in a brand new engine.
There is a small gap of .020-.030" left where the ring ends almost come together. If you do a leakdown test as per my earlier post, it will tell you how much you are losing. A stock type rebuild will have as much as 8% leakdown when it is brand new. This doesn't mean that anything was done wrong, it's just the way it is. A racing engine will have less leakdown (usually 2-3% for a well built race engine) when the engine is new because they use tighter ring end gaps and a smoother bore finish when the engine is honed. Now if you hear a large rush of air coming out the tailpipe or intake and the valves are closed, then there is a problem. Also, your radiator shouldn't look like Old Faithful either. ;). Chris "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1n3r$munk5$1@ID-193866.news.uni-berlin.de... > So, am I worrying about nothing then? Just because I'm hearing air and > feeling air out the pcv valve hose then this is ok. In other words, the > cylinder should not completely contain the air. This is normal? I'm > freaking and thinking all the rings are bad because I hear air. Please > correct me. > > Thanks, > > Bill > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message > news:401458E6.1AEEEF39@cox.net... > > Yes, you hear lots of air, but as I remember I was able to change > > the seal I'm working on before the compressor starts. > > God Bless America, ßill O|||||||O > > mailto:-------------------- http://www.----------.com/ > > > > William Oliveri wrote: > > > > > > Poured about a table spoon down #1, cranked it over a few times by hand > > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > > > I should not be hearing air, right? It sounds like I'm filling a tank > with > > > air. > > > > > > Just to let you know, I'm finding the compression stroke by sticking my > > > finger in the spark plug hole and turning the crank. When I feel > pressure > > > against my finger then I know I'm on the compression stroke and then > look > > > for the timing mark to reach TCD or just before. > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
You'll always get some leaking by the rings, even in a brand new engine.
There is a small gap of .020-.030" left where the ring ends almost come together. If you do a leakdown test as per my earlier post, it will tell you how much you are losing. A stock type rebuild will have as much as 8% leakdown when it is brand new. This doesn't mean that anything was done wrong, it's just the way it is. A racing engine will have less leakdown (usually 2-3% for a well built race engine) when the engine is new because they use tighter ring end gaps and a smoother bore finish when the engine is honed. Now if you hear a large rush of air coming out the tailpipe or intake and the valves are closed, then there is a problem. Also, your radiator shouldn't look like Old Faithful either. ;). Chris "William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1n3r$munk5$1@ID-193866.news.uni-berlin.de... > So, am I worrying about nothing then? Just because I'm hearing air and > feeling air out the pcv valve hose then this is ok. In other words, the > cylinder should not completely contain the air. This is normal? I'm > freaking and thinking all the rings are bad because I hear air. Please > correct me. > > Thanks, > > Bill > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message > news:401458E6.1AEEEF39@cox.net... > > Yes, you hear lots of air, but as I remember I was able to change > > the seal I'm working on before the compressor starts. > > God Bless America, ßill O|||||||O > > mailto:-------------------- http://www.----------.com/ > > > > William Oliveri wrote: > > > > > > Poured about a table spoon down #1, cranked it over a few times by hand > > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > > > I should not be hearing air, right? It sounds like I'm filling a tank > with > > > air. > > > > > > Just to let you know, I'm finding the compression stroke by sticking my > > > finger in the spark plug hole and turning the crank. When I feel > pressure > > > against my finger then I know I'm on the compression stroke and then > look > > > for the timing mark to reach TCD or just before. > > |
Re: Changing valve seals - putting air into cylinder - hear airleaking - help
The valves can leak too....
When you have the old seal off, dab a little oil around the valve stem to see how many bubbles come up. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's "L.W.(ßill) ------ III" wrote: > > Correct. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ > > William Oliveri wrote: > > > > So, am I worrying about nothing then? Just because I'm hearing air and > > feeling air out the pcv valve hose then this is ok. In other words, the > > cylinder should not completely contain the air. This is normal? I'm > > freaking and thinking all the rings are bad because I hear air. Please > > correct me. > > > > Thanks, > > > > Bill |
Re: Changing valve seals - putting air into cylinder - hear airleaking - help
The valves can leak too....
When you have the old seal off, dab a little oil around the valve stem to see how many bubbles come up. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's "L.W.(ßill) ------ III" wrote: > > Correct. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ > > William Oliveri wrote: > > > > So, am I worrying about nothing then? Just because I'm hearing air and > > feeling air out the pcv valve hose then this is ok. In other words, the > > cylinder should not completely contain the air. This is normal? I'm > > freaking and thinking all the rings are bad because I hear air. Please > > correct me. > > > > Thanks, > > > > Bill |
Re: Changing valve seals - putting air into cylinder - hear airleaking - help
The valves can leak too....
When you have the old seal off, dab a little oil around the valve stem to see how many bubbles come up. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's "L.W.(ßill) ------ III" wrote: > > Correct. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ > > William Oliveri wrote: > > > > So, am I worrying about nothing then? Just because I'm hearing air and > > feeling air out the pcv valve hose then this is ok. In other words, the > > cylinder should not completely contain the air. This is normal? I'm > > freaking and thinking all the rings are bad because I hear air. Please > > correct me. > > > > Thanks, > > > > Bill |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Yeah, I'm working on building my own Leak Down Tester. Bout halfway there.
Thanks, "c" <c@me.org> wrote in message news:PT_Qb.110970$fq1.100016@twister.rdc-kc.rr.com... > You'll always get some leaking by the rings, even in a brand new engine. > There is a small gap of .020-.030" left where the ring ends almost come > together. If you do a leakdown test as per my earlier post, it will tell you > how much you are losing. A stock type rebuild will have as much as 8% > leakdown when it is brand new. This doesn't mean that anything was done > wrong, it's just the way it is. A racing engine will have less leakdown > (usually 2-3% for a well built race engine) when the engine is new because > they use tighter ring end gaps and a smoother bore finish when the engine is > honed. Now if you hear a large rush of air coming out the tailpipe or intake > and the valves are closed, then there is a problem. Also, your radiator > shouldn't look like Old Faithful either. ;). > > Chris > > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1n3r$munk5$1@ID-193866.news.uni-berlin.de... > > So, am I worrying about nothing then? Just because I'm hearing air and > > feeling air out the pcv valve hose then this is ok. In other words, the > > cylinder should not completely contain the air. This is normal? I'm > > freaking and thinking all the rings are bad because I hear air. Please > > correct me. > > > > Thanks, > > > > Bill > > > > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message > > news:401458E6.1AEEEF39@cox.net... > > > Yes, you hear lots of air, but as I remember I was able to change > > > the seal I'm working on before the compressor starts. > > > God Bless America, ßill O|||||||O > > > mailto:-------------------- http://www.----------.com/ > > > > > > William Oliveri wrote: > > > > > > > > Poured about a table spoon down #1, cranked it over a few times by > hand > > > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > > > > > I should not be hearing air, right? It sounds like I'm filling a tank > > with > > > > air. > > > > > > > > Just to let you know, I'm finding the compression stroke by sticking > my > > > > finger in the spark plug hole and turning the crank. When I feel > > pressure > > > > against my finger then I know I'm on the compression stroke and then > > look > > > > for the timing mark to reach TCD or just before. > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Yeah, I'm working on building my own Leak Down Tester. Bout halfway there.
Thanks, "c" <c@me.org> wrote in message news:PT_Qb.110970$fq1.100016@twister.rdc-kc.rr.com... > You'll always get some leaking by the rings, even in a brand new engine. > There is a small gap of .020-.030" left where the ring ends almost come > together. If you do a leakdown test as per my earlier post, it will tell you > how much you are losing. A stock type rebuild will have as much as 8% > leakdown when it is brand new. This doesn't mean that anything was done > wrong, it's just the way it is. A racing engine will have less leakdown > (usually 2-3% for a well built race engine) when the engine is new because > they use tighter ring end gaps and a smoother bore finish when the engine is > honed. Now if you hear a large rush of air coming out the tailpipe or intake > and the valves are closed, then there is a problem. Also, your radiator > shouldn't look like Old Faithful either. ;). > > Chris > > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1n3r$munk5$1@ID-193866.news.uni-berlin.de... > > So, am I worrying about nothing then? Just because I'm hearing air and > > feeling air out the pcv valve hose then this is ok. In other words, the > > cylinder should not completely contain the air. This is normal? I'm > > freaking and thinking all the rings are bad because I hear air. Please > > correct me. > > > > Thanks, > > > > Bill > > > > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message > > news:401458E6.1AEEEF39@cox.net... > > > Yes, you hear lots of air, but as I remember I was able to change > > > the seal I'm working on before the compressor starts. > > > God Bless America, ßill O|||||||O > > > mailto:-------------------- http://www.----------.com/ > > > > > > William Oliveri wrote: > > > > > > > > Poured about a table spoon down #1, cranked it over a few times by > hand > > > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > > > > > I should not be hearing air, right? It sounds like I'm filling a tank > > with > > > > air. > > > > > > > > Just to let you know, I'm finding the compression stroke by sticking > my > > > > finger in the spark plug hole and turning the crank. When I feel > > pressure > > > > against my finger then I know I'm on the compression stroke and then > > look > > > > for the timing mark to reach TCD or just before. > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Yeah, I'm working on building my own Leak Down Tester. Bout halfway there.
Thanks, "c" <c@me.org> wrote in message news:PT_Qb.110970$fq1.100016@twister.rdc-kc.rr.com... > You'll always get some leaking by the rings, even in a brand new engine. > There is a small gap of .020-.030" left where the ring ends almost come > together. If you do a leakdown test as per my earlier post, it will tell you > how much you are losing. A stock type rebuild will have as much as 8% > leakdown when it is brand new. This doesn't mean that anything was done > wrong, it's just the way it is. A racing engine will have less leakdown > (usually 2-3% for a well built race engine) when the engine is new because > they use tighter ring end gaps and a smoother bore finish when the engine is > honed. Now if you hear a large rush of air coming out the tailpipe or intake > and the valves are closed, then there is a problem. Also, your radiator > shouldn't look like Old Faithful either. ;). > > Chris > > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1n3r$munk5$1@ID-193866.news.uni-berlin.de... > > So, am I worrying about nothing then? Just because I'm hearing air and > > feeling air out the pcv valve hose then this is ok. In other words, the > > cylinder should not completely contain the air. This is normal? I'm > > freaking and thinking all the rings are bad because I hear air. Please > > correct me. > > > > Thanks, > > > > Bill > > > > > > "L.W. (ßill) ------ III" <----------@cox.net> wrote in message > > news:401458E6.1AEEEF39@cox.net... > > > Yes, you hear lots of air, but as I remember I was able to change > > > the seal I'm working on before the compressor starts. > > > God Bless America, ßill O|||||||O > > > mailto:-------------------- http://www.----------.com/ > > > > > > William Oliveri wrote: > > > > > > > > Poured about a table spoon down #1, cranked it over a few times by > hand > > > > (found TDC twice) and tested again. Still I'm hearing the air. > > > > > > > > I should not be hearing air, right? It sounds like I'm filling a tank > > with > > > > air. > > > > > > > > Just to let you know, I'm finding the compression stroke by sticking > my > > > > finger in the spark plug hole and turning the crank. When I feel > > pressure > > > > against my finger then I know I'm on the compression stroke and then > > look > > > > for the timing mark to reach TCD or just before. > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
"William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... : : Just to let you know, I'm finding the compression stroke by sticking my : finger in the spark plug hole and turning the crank. When I feel pressure : against my finger then I know I'm on the compression stroke and then look : for the timing mark to reach TCD or just before. Are you sure you're not on the exhaust stroke? I'd pull the rockers off before airing up - then it doesn't matter what stroke you're on. -Brian |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
"William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... : : Just to let you know, I'm finding the compression stroke by sticking my : finger in the spark plug hole and turning the crank. When I feel pressure : against my finger then I know I'm on the compression stroke and then look : for the timing mark to reach TCD or just before. Are you sure you're not on the exhaust stroke? I'd pull the rockers off before airing up - then it doesn't matter what stroke you're on. -Brian |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
"William Oliveri" <wuji@bigvalley.net> wrote in message news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... : : Just to let you know, I'm finding the compression stroke by sticking my : finger in the spark plug hole and turning the crank. When I feel pressure : against my finger then I know I'm on the compression stroke and then look : for the timing mark to reach TCD or just before. Are you sure you're not on the exhaust stroke? I'd pull the rockers off before airing up - then it doesn't matter what stroke you're on. -Brian |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Go back and read the post I previously wrote. REMOVE the rocker arms for
the cyl you're doing. If you're at tdc on the exhaust stroke the exhaust valve is open. Even if you're at tdc on the compression stroke and both valves are closed the air will push the piston down to the bottom of it's stroke and the exhaust valve will start to open. Remove the rockers and it doesn't matter where the piston is at, the air is going to push it to the bottom. Remember I said to watch your fingers when it rolls over.You will still hear some air escaping, but it shouldn't be much. Steve "Cherokee-LTD" <spammenot@home.com> wrote in message news:2m3Rb.172550$7JB1.164982@news04.bloor.is.net. cable.rogers.com... > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... > : > : Just to let you know, I'm finding the compression stroke by sticking my > : finger in the spark plug hole and turning the crank. When I feel pressure > : against my finger then I know I'm on the compression stroke and then look > : for the timing mark to reach TCD or just before. > > Are you sure you're not on the exhaust stroke? > I'd pull the rockers off before airing up - then it doesn't matter what > stroke you're on. > -Brian > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Go back and read the post I previously wrote. REMOVE the rocker arms for
the cyl you're doing. If you're at tdc on the exhaust stroke the exhaust valve is open. Even if you're at tdc on the compression stroke and both valves are closed the air will push the piston down to the bottom of it's stroke and the exhaust valve will start to open. Remove the rockers and it doesn't matter where the piston is at, the air is going to push it to the bottom. Remember I said to watch your fingers when it rolls over.You will still hear some air escaping, but it shouldn't be much. Steve "Cherokee-LTD" <spammenot@home.com> wrote in message news:2m3Rb.172550$7JB1.164982@news04.bloor.is.net. cable.rogers.com... > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... > : > : Just to let you know, I'm finding the compression stroke by sticking my > : finger in the spark plug hole and turning the crank. When I feel pressure > : against my finger then I know I'm on the compression stroke and then look > : for the timing mark to reach TCD or just before. > > Are you sure you're not on the exhaust stroke? > I'd pull the rockers off before airing up - then it doesn't matter what > stroke you're on. > -Brian > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Go back and read the post I previously wrote. REMOVE the rocker arms for
the cyl you're doing. If you're at tdc on the exhaust stroke the exhaust valve is open. Even if you're at tdc on the compression stroke and both valves are closed the air will push the piston down to the bottom of it's stroke and the exhaust valve will start to open. Remove the rockers and it doesn't matter where the piston is at, the air is going to push it to the bottom. Remember I said to watch your fingers when it rolls over.You will still hear some air escaping, but it shouldn't be much. Steve "Cherokee-LTD" <spammenot@home.com> wrote in message news:2m3Rb.172550$7JB1.164982@news04.bloor.is.net. cable.rogers.com... > > "William Oliveri" <wuji@bigvalley.net> wrote in message > news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... > : > : Just to let you know, I'm finding the compression stroke by sticking my > : finger in the spark plug hole and turning the crank. When I feel pressure > : against my finger then I know I'm on the compression stroke and then look > : for the timing mark to reach TCD or just before. > > Are you sure you're not on the exhaust stroke? > I'd pull the rockers off before airing up - then it doesn't matter what > stroke you're on. > -Brian > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Thanks guys.
What I'm hearing is like I'm filling a tank with air if that makes any sense. It's hard for me to determine how much is not much and if it's too much. I'll try it again tonight with the arms off, put the air in and see if I can get the keepers out. Thanks again, Bill "Steve G" <NospamforSteve@Steve-Garner.com> wrote in message news:sxaRb.286421$X%5.75680@pd7tw2no... > Go back and read the post I previously wrote. REMOVE the rocker arms for > the cyl you're doing. If you're at tdc on the exhaust stroke the exhaust > valve is open. Even if you're at tdc on the compression stroke and both > valves are closed the air will push the piston down to the bottom of it's > stroke and the exhaust valve will start to open. Remove the rockers and it > doesn't matter where the piston is at, the air is going to push it to the > bottom. Remember I said to watch your fingers when it rolls over.You will > still hear some air escaping, but it shouldn't be much. > Steve > "Cherokee-LTD" <spammenot@home.com> wrote in message > news:2m3Rb.172550$7JB1.164982@news04.bloor.is.net. cable.rogers.com... > > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > > news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... > > : > > : Just to let you know, I'm finding the compression stroke by sticking my > > : finger in the spark plug hole and turning the crank. When I feel > pressure > > : against my finger then I know I'm on the compression stroke and then > look > > : for the timing mark to reach TCD or just before. > > > > Are you sure you're not on the exhaust stroke? > > I'd pull the rockers off before airing up - then it doesn't matter what > > stroke you're on. > > -Brian > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Thanks guys.
What I'm hearing is like I'm filling a tank with air if that makes any sense. It's hard for me to determine how much is not much and if it's too much. I'll try it again tonight with the arms off, put the air in and see if I can get the keepers out. Thanks again, Bill "Steve G" <NospamforSteve@Steve-Garner.com> wrote in message news:sxaRb.286421$X%5.75680@pd7tw2no... > Go back and read the post I previously wrote. REMOVE the rocker arms for > the cyl you're doing. If you're at tdc on the exhaust stroke the exhaust > valve is open. Even if you're at tdc on the compression stroke and both > valves are closed the air will push the piston down to the bottom of it's > stroke and the exhaust valve will start to open. Remove the rockers and it > doesn't matter where the piston is at, the air is going to push it to the > bottom. Remember I said to watch your fingers when it rolls over.You will > still hear some air escaping, but it shouldn't be much. > Steve > "Cherokee-LTD" <spammenot@home.com> wrote in message > news:2m3Rb.172550$7JB1.164982@news04.bloor.is.net. cable.rogers.com... > > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > > news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... > > : > > : Just to let you know, I'm finding the compression stroke by sticking my > > : finger in the spark plug hole and turning the crank. When I feel > pressure > > : against my finger then I know I'm on the compression stroke and then > look > > : for the timing mark to reach TCD or just before. > > > > Are you sure you're not on the exhaust stroke? > > I'd pull the rockers off before airing up - then it doesn't matter what > > stroke you're on. > > -Brian > > > > > > |
Re: Changing valve seals - putting air into cylinder - hear air leaking - help
Thanks guys.
What I'm hearing is like I'm filling a tank with air if that makes any sense. It's hard for me to determine how much is not much and if it's too much. I'll try it again tonight with the arms off, put the air in and see if I can get the keepers out. Thanks again, Bill "Steve G" <NospamforSteve@Steve-Garner.com> wrote in message news:sxaRb.286421$X%5.75680@pd7tw2no... > Go back and read the post I previously wrote. REMOVE the rocker arms for > the cyl you're doing. If you're at tdc on the exhaust stroke the exhaust > valve is open. Even if you're at tdc on the compression stroke and both > valves are closed the air will push the piston down to the bottom of it's > stroke and the exhaust valve will start to open. Remove the rockers and it > doesn't matter where the piston is at, the air is going to push it to the > bottom. Remember I said to watch your fingers when it rolls over.You will > still hear some air escaping, but it shouldn't be much. > Steve > "Cherokee-LTD" <spammenot@home.com> wrote in message > news:2m3Rb.172550$7JB1.164982@news04.bloor.is.net. cable.rogers.com... > > > > "William Oliveri" <wuji@bigvalley.net> wrote in message > > news:bv1kuv$n42q2$1@ID-193866.news.uni-berlin.de... > > : > > : Just to let you know, I'm finding the compression stroke by sticking my > > : finger in the spark plug hole and turning the crank. When I feel > pressure > > : against my finger then I know I'm on the compression stroke and then > look > > : for the timing mark to reach TCD or just before. > > > > Are you sure you're not on the exhaust stroke? > > I'd pull the rockers off before airing up - then it doesn't matter what > > stroke you're on. > > -Brian > > > > > > |
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