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Thread: runs rough

  1. #1
    Join Date
    Dec 2005
    Location
    south jersey, usa
    Posts
    9

    Default runs rough

    same running issues i took the plat+4's out and put in oem bmw plugs from the dealership and its the same it only backfires when i acelerate from stop or if i speed up on the highway. it feels like its backfiring but if i steadily push the gas pedel its smoother. after letting it idle, i turned it off and removed the plugs and they all looked fine but the plugs for 5 and 6 were soaked in gas. why is there escess gas on the plugs could it be because the coils are not firing right or could it be the injectors not spraying right? has anyone else had these issues?
    thanks in advance Jippi

  2. #2
    Join Date
    Jun 2005
    Location
    Cleveland, OH
    Posts
    1,279

    Default

    Quote Originally Posted by jippijak
    same running issues i took the plat+4's out and put in oem bmw plugs from the dealership and its the same it only backfires when i acelerate from stop or if i speed up on the highway. it feels like its backfiring but if i steadily push the gas pedel its smoother. after letting it idle, i turned it off and removed the plugs and they all looked fine but the plugs for 5 and 6 were soaked in gas. why is there escess gas on the plugs could it be because the coils are not firing right or could it be the injectors not spraying right? has anyone else had these issues?
    thanks in advance Jippi
    What sorta engine... please fill out your profile...

    That said... was there oil in the bottom of the plug wells?
    If it cannot be fixed by the dremel or ducktape.. get out the sledge...
    --------------------------------------------------------------------
    I miss my e34

  3. #3
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,839

    Default

    lets see, if this was a chevy id guess you have a couple plug wires reversed, but who knows if its a Catapilar tractor it could be the leads to the injectors.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  4. #4
    Join Date
    Mar 2005
    Location
    Hockinson, Washington
    Posts
    2,499

    Default

    Maybe the BMW plugs dont fit in the caterpillar and thats why it runs roughly.
    Lowered with blue h&r(?) springs, Bilsteins, tint, 19# design 3 injectors, Dual Magnaflow
    southwest WA

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