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Less vac after FMIC?

Discussion in 'A3/S3 Forum (8L Chassis)' started by Tim_Attard, Jul 15, 2013.

  1. Tim_Attard
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    Tim_Attard Active Member

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    [Jul 15, 2013]
    hi guys finally got round to fitting a FMIC was pretty straight forward but got a cheap ebay jobby and was a nightmare with the drivers side blah blah blah, finally got everything back together started it up and on idle i have a vac of -0.6 bar (-9ish) after a few seconds it drops to -0.7 but i used to sit on 0.8/9 is this just down to the extra length of pipe work etc or do i have a leek in the pipping?

    Thanks
    Tim
    #1
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  3. Scullies
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    Scullies Well-Known Member

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    [Jul 16, 2013]
    You should always check for leaks after working on the intake system.
    but those readings seem to be ok.
    #2
  4. 16Klappe
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    16Klappe Princess Clap.

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    [Jul 16, 2013]
    Inhg!
    #3
  5. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jul 16, 2013]
    fmic cannot influence idle vac which is between engine and throttle plate..
    look for a leak off the inlet manifold
    #4
  6. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Jul 16, 2013]
    I see the vegetables have made it into the pipe work again, damn those leeks.:laugh:
    #5
    Tim_Attard, m19lte and Paradox1 like this.
  7. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Jul 16, 2013]
    cabbage
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