C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil Leak

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Old Mar 30, 2006 | 10:37 AM
  #1  
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Default Oil Leak

I have an oil leak that seems to be coming from the valve covers. I've cleaned it up and leaked from there again. Its getting down onto my spark plugs and i'm worried that it will foul them. My question is whether or not to replace the head gaskets or just the valve cover gaskets? Engine does not consume any oil, this is recent leak.
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Old Mar 30, 2006 | 10:43 AM
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Time for new valve cover gaskets-why on earth would you be thinking head gaskets-if you had oil, water or air coming out the head gasket you'd notice alot more than just and oil leak-it would run like crap.
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Old Mar 30, 2006 | 10:47 AM
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Well it doesnt run like crap, but its not great either (a different problem-fuel filter?). I thought it might be the head gaskets cause of the oil on the spark plugs, but my dad said it was just leaking down the side of the engine onto them.
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Old Mar 30, 2006 | 10:47 AM
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Determine if the leak is the head gasket or the valve cover gasket and replace what is leaking. Valve cover gasket replacement is an easy job but a head gasket replacement is a big job.

If you suspect a head gasket problem, do a compression check first.

Any DTC codes?
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Old Mar 30, 2006 | 12:38 PM
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Before repacing valve cover gaskets, try to tighted the four nuts on each first. Seems that some times they get a little loose. But sounds like leaking valve cover gaskets if it is just oil.
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Old Apr 1, 2006 | 01:29 AM
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I bought some new Fel-Pro rubber/steel gaskets today. The guy said they were better than the cork ones and could be reused. The old gaskets are screwed, so its not a wonder it leaks.
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Old Apr 1, 2006 | 02:09 AM
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Use the rubber gaskets. The cork ones suck. Every time I've used cork gaskets, within a year they are leaking again.

I used Fel Pro rubber on my oil pan and valve covers, and 84's engine is leak free.

Changing valve cover gaskets isn't difficult, but I would rather be cruising than wrenching. Do it once, do it right. Fel Pro rubber.
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Old Apr 1, 2006 | 12:20 PM
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Alright I went to take the valve covers off and I cant figure out how anyone can take them off. Right now i'm working on the driver side and I followed the directions in my Hayne's manual. I got the cover off but cant get it out of the car. There just simply isnt enough room to work with. The A.I.R. pump is on one side and all the crap along the firewall is on the other (some electrical box and a metal line). So how do you get these things outta there?
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