How do I find a vacuum leak?

Discussion in 'General Motoring' started by blurp, Dec 5, 2003.

  1. blurp

    blurp Guest

    I believe I have correctly diagnosed my latest problem as the result
    of a vacuum leak...now how do I find out where it's leaking?

    My car is a 1983 240 Turbo with the Bosch injection system (CiS I
    believe).

    So any suggestions on how this can be done? Someone told me a smoke
    machine was a common way but a) I don't have one and b) so what if I
    did, how would I use it?

    Thanks for any suggestions.

    blurp
     
    blurp, Dec 5, 2003
    #1
  2. blurp

    Mike F Guest

    A smoke machine forces smoke under pressure into the intake manifold.
    When you see where it leaks out, you've found your leak. Spraying any
    fluid out of a spray bottle (WD 40, water, whatever) will change the
    idle when you're hitting the leak. On a 240 Turbo, the injector seals
    are a good place to start. Any leak anywhere from the air flow meter,
    turbo, intercooler, intake manifold through to the injectors will cause
    a problem. There are 1 or 2 hoses (2 if intercooled) stuck through
    holes in the cast aluminum pipe that is inbetween the air flow meter and
    turbo that often fall or get pulled out.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    NOTE: new address!!
    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Dec 5, 2003
    #2
  3. blurp

    blurp Guest

    Thanks Mike! I'll check it out today.



     
    blurp, Dec 7, 2003
    #3
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