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Thread: how to check for vacum leaks?

  1. #1
    Join Date
    Nov 2004
    Posts
    65

    Default how to check for vacum leaks?

    How do i check for vacum leaks behind the intake manifold (pcv plate and hoses) is there any tools that i can use ? do i have to remove the intake manifold to replace the gaskets and hoses or can this be done with the manifold in place?

  2. #2
    Join Date
    Jan 2004
    Posts
    1,342

    Default Spray carb cleaner in the suspected areas with the.....

    engine running and listen for changes in the idle speed.

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,843

    Default remove your oil filler cap, if you have big leaks then there will be little differenc

    e in idle quality.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

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