Excessive Vacuum

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April 23rd, 2013 | 11:42 AM

hotrod6461

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Excessive Vacuum

I have a 1998 chevy K1500 5.7 with 170000 miles. It developed a miss. I just happened to pull the PCV valve out and noticed the vacuum from the valve cover has a heck of a lot of vacuum, more than it should. Does anyone know the problem?
Thank You

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April 23rd, 2013 | 1:25 PM

kevinkpk

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From: kevinkpk

Are you refering to blowby?

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April 23rd, 2013 | 6:54 PM

hotrod6461

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No its not blow by. Its a hard vacuum in the crank case.

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April 23rd, 2013 | 6:57 PM

kevinkpk

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Joined: Jul 2011

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From: kevinkpk

Quote:

Originally Posted by hotrod6461

No its not blow by. Its a hard vacuum in the crank case.

Dunno.

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