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

1999 Chevrolet Suburban

Tiny

digial

March, 31, 2012 AT 1:02 PM

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.

1 Answer

Tiny

KHLow2008

March, 31, 2012 AT 1:25 PM

Check for a bad PCV valve.

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