Mechanics

WHAT IS THE CAUSE OF HIGH IDLE COMBINED WITH EXCESSIVE CRANKCASE PRESSURE

1999 Chevrolet Suburban • 225,000 miles

The truck is the wifes and has been very well maintained. When driving you dont have to touch the gas pedal and it wants to accelerate. When checking hoses for a vacuum leak I pulled the oil filler tube cap off and the pressure comming out of the crankcase was crazy. I'm thinking a broken piston ring but there are no noises or excessive oil consumption.
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Digial
March 31, 2012.




Check for a bad PCV valve.

KHLow2008
Mar 31, 2012.


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