symptoms of oversized spark plug gap

Posted by Onnipotente, Oct 27, 2004
Newbie Forum - Beginner/newbie/general DSM modification questions. First mods, how to run 10's when you haven't run 12's yet, any tech question that doesn't fit in another tech forum.

  1. Onnipotente

    Onnipotente Proven Member

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    i checked the gap on my spark plugs today and they were at around .04 in. and my car is running fine. wat would some symptoms be of having the gap larger than its spossed to be? bad gas mileage, plugs wont last as long :confused:
    #1
  2. guitarXgeek

    guitarXgeek Proven Member

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    Huntsville, Alabama
    A bad "stutter" when going WOT is usually the biggest sign.
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  3. Defiant

    Defiant DSM Wiseman

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    glorious Galt, California
    Under high load, the spark may not be able to make the jump, which puts a really nasty load on your coils.
    A plug won't change its gap that much, did you gap them wrong to start with?
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  4. dave99gst

    dave99gst DSM Wiseman

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    plymouth, Michigan
    its almost like running a few ranges cooler plug also.
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  5. Onnipotente

    Onnipotente Proven Member

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    yea... i didnt have the right gapping tool, but now i do... i really asked the question to see if its was worth adjusting the gap(since the car was running fine) or just leaving it alone... thanks for the responses
    #5

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