where does this tube belong?

Discussion in 'Engine' started by gt-83, Dec 23, 2013.

  1. gt-83

    gt-83 Hardcore MB Enthusiast

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    [​IMG]

    Still trying to get my coupe running right........ive just found this going nowhere,
     
    Last edited: Dec 23, 2013
  2. BlackC55

    BlackC55 Authorised Forum Sponsor Authorised Forum Sponsor

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    I see no pic!
     
  3. grober

    grober MB Club Veteran

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    Almost certainly should go to the inlet manifold beyond the throttle plate where the vacuum is highest. It looks as if it leads to the one way filter/valve mounted on the inner wing from which a clear vacuum line runs down to the EZL ignition unit mounted on the wing. The EZL needs a vacuum signal to modify the ignition advance curve. You need to look for a blank spigot or a disconnected rubber connector possibly on the underside.
     
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  4. OP
    OP
    gt-83

    gt-83 Hardcore MB Enthusiast

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    Thanks Graeme, ........could that tube be the culprit with a surging problem?
     
  5. grober

    grober MB Club Veteran

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    could be
    This help? its for a 12valve but manifold the same basically.
    [​IMG]
     
  6. OP
    OP
    gt-83

    gt-83 Hardcore MB Enthusiast

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    Got it, underneath the air flow meter......didnt stop the surging though:(
     
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