Fuel Problem?

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  • agile30
    E30 Modder
    • Oct 2008
    • 832

    #1

    Fuel Problem?

    So for a few months now my car has had this issue that gets frustrating that I believe may be fuel related. Whenever I give it alot of gas it will start missing really bad. But when I slowly creep on the gas to wide open throttle it runs fine. The other night I popped open the hood and you could smell gas. It also seems like it is running rich....... Any advice on what it could be? The car is a stock 91 318is
    Originally posted by Good & Tight
    It takes real man to mount a big woman, all you haters are just scared boys.
  • Spinning Tires
    Wrencher
    • Feb 2007
    • 283

    #2
    Fuel Pressure Regulator maybe. take off the vacuum line going to it. start the car. see if gas comes out
    First: 1984 318i
    Second: 1987 325
    Third: 1987 325is
    Current: 1990 325i (Soon To Be 335i)

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    • Liam
      Mod Crazy
      • Mar 2009
      • 753

      #3
      Check your cap and rotor, spark plug cables and spark plugs (basically the secondary ignition system).
      I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃xS : φ(x)) → (∀xS : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true".

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      • E30_fiend
        R3V OG
        • Apr 2006
        • 7348

        #4
        three letters A F M.

        check it
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        Taylor- Follow me on Instagram @e30_fiend


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        • Spinning Tires
          Wrencher
          • Feb 2007
          • 283

          #5
          AFM and ignition do not make it smell like gas under the hood unless you have a gas leak too. If thats the case and your leaking gas and arcing a spark at the same time you better buy a fire extinguisher
          First: 1984 318i
          Second: 1987 325
          Third: 1987 325is
          Current: 1990 325i (Soon To Be 335i)

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          • Liam
            Mod Crazy
            • Mar 2009
            • 753

            #6
            Air flow meter is possible but would not respond well to gradual acceleration either and yes raw fuel smell isn't a good thing.

            Yes a fuel pressure regulator could be suspect as well, test the pressure.
            Last edited by Liam; 03-12-2009, 08:34 PM.
            I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃xS : φ(x)) → (∀xS : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true".

            Comment

            • bimmerboy12
              E30 Enthusiast
              • Jun 2004
              • 1057

              #7
              in addition to checking the fuel regulator, check all your fuel hose junctions, especially the cluster of 4 hoses that meet at the black plastic connector about a foot under the throttle body. This was leaking in mine to produce intermittent fuel smell. Check while running cause it evaporates quickly.

              1988 325iC Project - FINISHED!
              Build Thread: http://www.r3vlimited.com/board/show...ht=325iC+paint

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