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by firemandan on July 2nd, 2005

firemandan

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Why is oil coming out of my oil filler cap? I have replaced the cap with a new one and have done a full oil change but it still leaks out.

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Answers. 2 helpful answers below.

  • by Jack Scotty on August 10th, 2005

    Jack Scotty

    Check your PCV valve. Its the device that provides ventilation to the crankcase and valve covers. If its clogged or non functional it will cause the engine to suck or blow air from an area with less resistance, which is probably the filler cap. As its blowing air out of the engine it will shoot a little bit of oil with it.

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  • by Buzz on April 12th, 2007

    Buzz

    While you are changing your PCV valve make sure that the PCV lines are clear and not pinched.. Had to edit; i am assuming that this car has good compression and not bad cylinders.??

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