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PCV leak???

This is a discussion on PCV leak??? within the General Help forums, part of the LSx Technical Help Section category; i had to remove my intake for my knock sensor install. but then got it all together to find out ...

  1. #1
    Senior Member SteveCZ28's Avatar
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    99 Chevrolet Camaro Z-28

    PCV leak???

    i had to remove my intake for my knock sensor install. but then got it all together to find out that i have a low input flow on the map sensor...basically meaning i have a vacuum leak somewhere. i removed my intake again, and i do notice my intake gaskets are kinda crushed..but i removed all of the pcv hoses (from behind the throttle body to the passenger side valve cover to the drivers side valve cover. but i was thinking if say one of the 2 valve cover hoses were undone would it cause a vacuum leak big enough for the map sensor to sense it???? or would it make no difference??

  2. #2
    Moderator Cutlass's Avatar
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    1999 Formula WS6 M6-sold
    2001 Silverado Z71

    no the leak has to be between the intake and PCV valve to be a vacuum leak. Any thing past that is metered air flow through the PCV valve

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