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kevinthegreat

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  8. Pressure In My Valve Cover

    in General SS

    Posted

    While the engine is idling, pull the PCV valve from the driver's valve cover and check for suction - if there is no suction, then the PCV line is blocked; if there IS suction then you have hellacious amount of blowby at idle and I would do a cylinder kill test then a leakdown test.

     

    And to triple-check, first place a piece of paper over the oil filler hole and see if there is suction or blowby at idle (there should be suction).

     

    Mr. P.

     

    * I just had a thought, the whistling could be SUCTION at the oil fill cap instead of blowby; if this is the case, the motor is good and you need to replace the rubber gasket on the oil fill cap, or the dipstick tube.

     

    i will do those tests tomorrow...... if it makes it any easier to diagnose, the noise is coming from the passenger side towards the end of the end of the valve cover. i havent take the engine covers off yet to check it out yet since it was dark when i discovered it

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