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

Would leaking Valve cover gaskets cause a vacuum leak situation?

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Old 07-30-2003, 07:19 PM
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montie98
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Default Would leaking Valve cover gaskets cause a vacuum leak situation?

My 85s need to be replaced. Should this be a top priority?
Old 07-30-2003, 07:52 PM
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1MoorTym
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Default Re: Would leaking Valve cover gaskets cause a vacuum leak situation? (montie98)

Depends on how much oil is leaking


[Modified by 1MoorTym, 7:53 PM 7/30/2003]
Old 07-30-2003, 08:09 PM
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jackdaroofer
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Default Re: Would leaking Valve cover gaskets cause a vacuum leak situation? (montie98)

My 85s need to be replaced. Should this be a top priority?
:D IMHO, they shouldn't cause a vacuum leak problem. Pcv Valve is sucking from crankcase, and leaking gaskets might cause air to suck there rather than the crankcase...notice, I said might!

Generally you will get oil leaks way before you get a vacuum leak, if you ever get a vacuum leak IMHO

Try tightening the cover bolts, gently! I have to do this every now and then since they do work loose.

:seeya

:steering:
Old 07-31-2003, 09:33 AM
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CentralCoaster
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Default Re: Would leaking Valve cover gaskets cause a vacuum leak situation? (jackdaroofer)

Assuming your pcv supply line (passenger side) isn't clogged, no.

If anything, you have too much crankcase pressure, and that's contributing to your valve cover leaks. :lurk:
Old 07-31-2003, 01:55 PM
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onedef92
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Default Re: Would leaking Valve cover gaskets cause a vacuum leak situation? (montie98)

They did in my case. I had both a leaking timing cover seal and the dreaded intake gasket. Code 32. Rather large leaks in both cases. Fixed both and no SES light since! :thumbs:

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