oil leaking again....
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Joined: Aug 2002
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oil leaking again....
Well I finally broke the ole girl back out today, hasn't been ran for atleast a month. Started down the road and smelled oil. So I pulled over and sure enuf there is a small stream of oil coming from the filler cap down across the headers... not exactly what i wanted to find.
Now my question is what is causing this problem? The cap is tight, gasket is good, new pcv filter and grommet (fits tight). Doesn't seem to have excessive blow by. Its been doing this for a while, but I don't drive her often so I was blaming it on the crappy chrome valve covers. They used the rubber pushin type of filler/breather. But now I have the stock covers and fillers back on.
The last time i had the valve covers off everything looked good and clean. When I did bearings, timing chain, rear main, everything looked brand new. No big piles of gunk or buildup. Any ideas?? Thanks!!!!
Now my question is what is causing this problem? The cap is tight, gasket is good, new pcv filter and grommet (fits tight). Doesn't seem to have excessive blow by. Its been doing this for a while, but I don't drive her often so I was blaming it on the crappy chrome valve covers. They used the rubber pushin type of filler/breather. But now I have the stock covers and fillers back on.
The last time i had the valve covers off everything looked good and clean. When I did bearings, timing chain, rear main, everything looked brand new. No big piles of gunk or buildup. Any ideas?? Thanks!!!!
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Joined: Jan 2003
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oil leaking again....
I hope that you didn't install a high vlume oil pump in this engine because in that case the oil may be getting trapped up in the valve covers and just getting pushed out the filler cap. keep an eye on your oil pressure for dropps and if that happens then check your oil pan for metal chunks-hope that doesn't happen bro-good luck
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oil leaking again....
The oil seems to flow easy enuf, it'll take it as fast as I can dump it in during an oil change. Haven't noticed any drops in pressure, have a mechanical gauge under the hood. Once warm weather comes back I'm gonna pull the heads and see if there is anything there...
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Joined: Sep 1999
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From: Indiana
oil leaking again....
What happens when you remove the oil fill cap while the engine is running?
Is the PCV system working right? Have you physically checked for vacuum at the PCV valve itself?
If the PCV system is working, it just about has to be blow-by.
Is the PCV system working right? Have you physically checked for vacuum at the PCV valve itself?
If the PCV system is working, it just about has to be blow-by.
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oil leaking again....
Yep, I've got vaccum to the PCV valve. And I've tried to get it blow by with the cap off by reving the engine, holding it around 2500 rpms, etc but it just won't do it while I'm standing there looking at it. 
Thanks!
Thanks!
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Joined: Sep 1999
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From: Indiana
oil leaking again....
Are you looking for solid oil to come out or are you looking for wisps of blow-by vapor coming from the oil fill hole?
I have used a flashlight after dark to shine across the oil fill hole on the valve cover to see the blow-by vapor coming from it while its running and warmed up.
I have used a flashlight after dark to shine across the oil fill hole on the valve cover to see the blow-by vapor coming from it while its running and warmed up.
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oil leaking again....
I'm looking for both. I notice a slight amount of vapor but it doesn't seem to be anything bad.
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Posting Guru
Joined: Sep 1999
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From: Indiana
oil leaking again....
When you have the oil cap off, you are letting it vent better, so you won't have oil coming out then.
Your vapor you are seeing is the blow-by. It seems then that there must be more blow-by than the PCV system can handle. It just builds enough crankcase presssure to push it around the oil fill cap and run down the valve covers.
Your vapor you are seeing is the blow-by. It seems then that there must be more blow-by than the PCV system can handle. It just builds enough crankcase presssure to push it around the oil fill cap and run down the valve covers.