 Rebuilt Motor Blowing Oil |
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| vesnyder |
 May 14 2008, 08:56 PM
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#1
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Senior Member  Group: Members Posts: 680 Joined: 14-April 05 From: Cleveland, OH Member No.: 3,933  |
Just rebuilt my motor and after sitting for a couple days it blows oil out the exhaust after just starting it up. What could be causing this? I have about 500 miles on it - could it be that the rings have not seated yet?
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| davep |
May 14 2008, 09:13 PM
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#2
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914 Historian Group: Benefactors Posts: 5,141 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada  |
If the rings are not seated you would get combustion gases blowing past them and pressurizing the crankcase. But I'm not sure how that gets oil into the exhaust unless the oil is leaking past the rings when the engine is sitting.
So exactly what did your rebuild entail? |
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| vesnyder |
May 14 2008, 09:37 PM
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#3
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Senior Member Group: Members Posts: 680 Joined: 14-April 05 From: Cleveland, OH Member No.: 3,933 |
It was a complete rebuild - new P&C's, rebuilt heads, the works. That's what I was thinking - oil seeping past the rings when sitting?
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| SGB |
May 14 2008, 09:40 PM
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#4
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
QUOTE(vesnyder @ May 14 2008, 10:37 PM)  It was a complete rebuild - new P&C's, rebuilt heads, the works. That's what I was thinking - oil seeping past the rings when sitting? Seems reasonable. Either that or valve guides. I don't really understand what happens to cause rings to "seat". I need Jake or Cap'n to school me... |
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| So.Cal.914 |
May 14 2008, 09:44 PM
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#5
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
Maybe a bad from the mnfr valve guide seal.
Silly Q...When you put the oil rings in did you stagger them? |
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| 749142 |
May 14 2008, 10:21 PM
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#6
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Member Group: Members Posts: 254 Joined: 8-January 08 From: Bakersfield, Ca Member No.: 8,545 |
if oil is seeping past the rings and pistons when it sits you must have too much oil in it or ar you parked on a really steep incline? somethings not making sense. and you havent been making it nock?(maybe busted ring and piston)?
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