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
> >
> >
>
>