Re: Grit on oil drain plug
If it is a bearing then the crank really, really needs to go to a machine
shop for a check-up. It can be replaced from the bottom though. Plastigage is a good idea, because the machine shop won't be able to check your bearing bores, which will still be in the engine. If the plastigage results are not good, then you open up a whole 'nother can of worms. Usually, this does not happen, but check anyway. If it is a wrist pin, then the only way to get to it is with the head and oil pan off. In that case, anticipate piston damage, need for ring replacement, etc. With a "faint knock" maybe it is piston slap that goes away when the engine is warm, imagination, or gremlins. Hope is a good thing to have, but too much is probably bad too. Earle <JRK58@MSN.COM> wrote in message news:1135108397.113964.99300@g14g2000cwa.googlegro ups.com... > > popeyeball wrote: > > JK, > > Hopefully the grit was a non sequitur. > > I'd consider changing the oil in a short span and checking for grit > > again. I'd also treat your engine (spend a few extra bucks) to a real > > oil filter like a Mobil One. > > Steve in Michigan > > I am going to drain into a clean jug with a magnet taped to the bottom. > I don't want to waste 30 bucks worth of Mobil one 15-50 with less than > a hundred miles on it. I did use a MB1 filter on the last change. I > heard a very faint knock again this morning but I didn't have the > stethoscope on hand. I'm hoping it's nothin but I hate having doubts. > If it's a wrist pin or bearing can it be repaired from the bottom? The > rig only has 29K and runs sweet, I think a complete rebuild would be a > waste. Thanks for the reply. > > J Kennedy > |
Re: Grit on oil drain plug
If it is a bearing then the crank really, really needs to go to a machine
shop for a check-up. It can be replaced from the bottom though. Plastigage is a good idea, because the machine shop won't be able to check your bearing bores, which will still be in the engine. If the plastigage results are not good, then you open up a whole 'nother can of worms. Usually, this does not happen, but check anyway. If it is a wrist pin, then the only way to get to it is with the head and oil pan off. In that case, anticipate piston damage, need for ring replacement, etc. With a "faint knock" maybe it is piston slap that goes away when the engine is warm, imagination, or gremlins. Hope is a good thing to have, but too much is probably bad too. Earle <JRK58@MSN.COM> wrote in message news:1135108397.113964.99300@g14g2000cwa.googlegro ups.com... > > popeyeball wrote: > > JK, > > Hopefully the grit was a non sequitur. > > I'd consider changing the oil in a short span and checking for grit > > again. I'd also treat your engine (spend a few extra bucks) to a real > > oil filter like a Mobil One. > > Steve in Michigan > > I am going to drain into a clean jug with a magnet taped to the bottom. > I don't want to waste 30 bucks worth of Mobil one 15-50 with less than > a hundred miles on it. I did use a MB1 filter on the last change. I > heard a very faint knock again this morning but I didn't have the > stethoscope on hand. I'm hoping it's nothin but I hate having doubts. > If it's a wrist pin or bearing can it be repaired from the bottom? The > rig only has 29K and runs sweet, I think a complete rebuild would be a > waste. Thanks for the reply. > > J Kennedy > |
Re: Grit on oil drain plug
If it is a bearing then the crank really, really needs to go to a machine
shop for a check-up. It can be replaced from the bottom though. Plastigage is a good idea, because the machine shop won't be able to check your bearing bores, which will still be in the engine. If the plastigage results are not good, then you open up a whole 'nother can of worms. Usually, this does not happen, but check anyway. If it is a wrist pin, then the only way to get to it is with the head and oil pan off. In that case, anticipate piston damage, need for ring replacement, etc. With a "faint knock" maybe it is piston slap that goes away when the engine is warm, imagination, or gremlins. Hope is a good thing to have, but too much is probably bad too. Earle <JRK58@MSN.COM> wrote in message news:1135108397.113964.99300@g14g2000cwa.googlegro ups.com... > > popeyeball wrote: > > JK, > > Hopefully the grit was a non sequitur. > > I'd consider changing the oil in a short span and checking for grit > > again. I'd also treat your engine (spend a few extra bucks) to a real > > oil filter like a Mobil One. > > Steve in Michigan > > I am going to drain into a clean jug with a magnet taped to the bottom. > I don't want to waste 30 bucks worth of Mobil one 15-50 with less than > a hundred miles on it. I did use a MB1 filter on the last change. I > heard a very faint knock again this morning but I didn't have the > stethoscope on hand. I'm hoping it's nothin but I hate having doubts. > If it's a wrist pin or bearing can it be repaired from the bottom? The > rig only has 29K and runs sweet, I think a complete rebuild would be a > waste. Thanks for the reply. > > J Kennedy > |
Re: Grit on oil drain plug
I heard that a main bearing going out would be pretty loud, increasing
with temperature and a loss of oil pressure. This knock is barely audible but definitely there.I can't hear it with the hood up, only sitting in the cab with the doors shut. I have only heard it twice, both times at a cold start up. It does go away after a minute or so. As far as the grit goes what could it be? They are very small, black and magnetic. I guess I will know more when I drain it. Thanks for the reply. J Kennedy |
Re: Grit on oil drain plug
I heard that a main bearing going out would be pretty loud, increasing
with temperature and a loss of oil pressure. This knock is barely audible but definitely there.I can't hear it with the hood up, only sitting in the cab with the doors shut. I have only heard it twice, both times at a cold start up. It does go away after a minute or so. As far as the grit goes what could it be? They are very small, black and magnetic. I guess I will know more when I drain it. Thanks for the reply. J Kennedy |
Re: Grit on oil drain plug
I heard that a main bearing going out would be pretty loud, increasing
with temperature and a loss of oil pressure. This knock is barely audible but definitely there.I can't hear it with the hood up, only sitting in the cab with the doors shut. I have only heard it twice, both times at a cold start up. It does go away after a minute or so. As far as the grit goes what could it be? They are very small, black and magnetic. I guess I will know more when I drain it. Thanks for the reply. J Kennedy |
Re: Grit on oil drain plug
On 20 Dec 2005 12:15:54 -0800, JRK58@MSN.COM wrote:
>I heard that a main bearing going out would be pretty loud, increasing >with temperature and a loss of oil pressure. This knock is barely >audible but definitely there.I can't hear it with the hood up, only >sitting in the cab with the doors shut. I have only heard it twice, >both times at a cold start up. It does go away after a minute or so. As >far as the grit goes what could it be? They are very small, black and >magnetic. I guess I will know more when I drain it. Thanks for the >reply. There is always a little metal in the bottom of an engine or gear case. A magnetic drain plug will make it more noticeable because it concentrates it in one small place. That's why there is a fine screen over the oil pump pick up tube (it protects the gears that actually pump the oil). I really think you're worrying over nothing. If you don't hear bearing or piston slap, don't worry. > >J Kennedy |
Re: Grit on oil drain plug
On 20 Dec 2005 12:15:54 -0800, JRK58@MSN.COM wrote:
>I heard that a main bearing going out would be pretty loud, increasing >with temperature and a loss of oil pressure. This knock is barely >audible but definitely there.I can't hear it with the hood up, only >sitting in the cab with the doors shut. I have only heard it twice, >both times at a cold start up. It does go away after a minute or so. As >far as the grit goes what could it be? They are very small, black and >magnetic. I guess I will know more when I drain it. Thanks for the >reply. There is always a little metal in the bottom of an engine or gear case. A magnetic drain plug will make it more noticeable because it concentrates it in one small place. That's why there is a fine screen over the oil pump pick up tube (it protects the gears that actually pump the oil). I really think you're worrying over nothing. If you don't hear bearing or piston slap, don't worry. > >J Kennedy |
Re: Grit on oil drain plug
On 20 Dec 2005 12:15:54 -0800, JRK58@MSN.COM wrote:
>I heard that a main bearing going out would be pretty loud, increasing >with temperature and a loss of oil pressure. This knock is barely >audible but definitely there.I can't hear it with the hood up, only >sitting in the cab with the doors shut. I have only heard it twice, >both times at a cold start up. It does go away after a minute or so. As >far as the grit goes what could it be? They are very small, black and >magnetic. I guess I will know more when I drain it. Thanks for the >reply. There is always a little metal in the bottom of an engine or gear case. A magnetic drain plug will make it more noticeable because it concentrates it in one small place. That's why there is a fine screen over the oil pump pick up tube (it protects the gears that actually pump the oil). I really think you're worrying over nothing. If you don't hear bearing or piston slap, don't worry. > >J Kennedy |
Re: Grit on oil drain plug
On 20 Dec 2005 11:53:17 -0800, JRK58@MSN.COM wrote:
> >popeyeball wrote: >> JK, >> Hopefully the grit was a non sequitur. >> I'd consider changing the oil in a short span and checking for grit >> again. I'd also treat your engine (spend a few extra bucks) to a real >> oil filter like a Mobil One. >> Steve in Michigan > >I am going to drain into a clean jug with a magnet taped to the bottom. >I don't want to waste 30 bucks worth of Mobil one 15-50 with less than >a hundred miles on it. I did use a MB1 filter on the last change. I >heard a very faint knock again this morning but I didn't have the >stethoscope on hand. I'm hoping it's nothin but I hate having doubts. >If it's a wrist pin or bearing can it be repaired from the bottom? The >rig only has 29K and runs sweet, I think a complete rebuild would be a >waste. Thanks for the reply. Let me repeat, that's common. As long as it stops as the engine warms, don't worry. I've had it, and both engines went over 150,000 miles farther before they needed an overhaul. And synthetic oil is usually thinner than petroleum-based oil, and can such noises (and oil consumption) more noticeable. Dan > >J Kennedy |
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