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Thread: needing help with rough running 350
          
   
   

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  1. #1
    renu3636's Avatar
    renu3636 is offline CHR Member Visit my Photo Gallery
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    Sep 2005
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    Gering
    Car Year, Make, Model: 47 fleetline
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    Question needing help with rough running 350

     



    OK guys heres the deal,I have a 1994 GMC yukon(350 fuel ing.) it would miss every so often on idle,like a spark plug wire jumping,(has new wires) I replaced plugs ,#4 was real carboned up,the rest were some what black and a little wet,I replaced with the boush platinum,ran real good for a week,now when I stop then try to go,it misses really bad , like plug wires jumping or floating out, so I checked plugs, they were all wet and had black carbon on them, My question is what do I look for ? is there sensors or something that controls the fuel on this ? I don't know much if anything that have computers, I really would appreciate some help or feed back. thanks...:

  2. #2
    TyphoonZR's Avatar
    TyphoonZR is offline CHR Member Visit my Photo Gallery
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    Chwk
    Car Year, Make, Model: 86 S-15 Jimmy sb 400
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    In addition to what Denny has said, why not try a bottle of injector cleaner?
    Objects in my rear view mirror are a good thing unless,.... they have red and blue lights flashing.

  3. #3
    renu3636's Avatar
    renu3636 is offline CHR Member Visit my Photo Gallery
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    thanks guys ! took Dennys' advice and went to advance auto,
    they run a test on it, they said it was the oxygen sensor, (pricey little thing ) but hey!! it works.......

  4. #4
    R Pope is offline CHR Member Visit my Photo Gallery
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    With fuel injection, two times out of three, its the oxygen sensor.

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