Thread: Pcv ?s
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Old 12-30-2013, 09:41 PM
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When the throttle is closed at idle,there's vacumn inside the crankcase.
The pistons are creating a vacumm in the cylinders that transfers to vacumn in the crankcase when the throttle blade is closed,and the engines just idling.
Piston rings are designed to seal under pressure,they'll leak if vacumn is applied to them.
Nothing serious,what you're experiencing is normal
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