symptoms of oversized spark plug gap

Posted by Onnipotente, Oct 27, 2004

Please Support STM Tuned
  1. Onnipotente

    Onnipotente Proven Member

    Joined Oct 16, 2003
    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:

    Log in/Register to remove ads
  2. guitarXgeek

    guitarXgeek Proven Member

    Joined Jun 13, 2004
    Huntsville, Alabama
    A bad "stutter" when going WOT is usually the biggest sign.
  3. Defiant

    Defiant DSM Wiseman

    Joined Jan 13, 2003
    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?
    My DSM:
  4. dave99gst

    dave99gst DSM Wiseman

    Joined Sep 8, 2002
    plymouth, Michigan
    its almost like running a few ranges cooler plug also.
  5. Onnipotente

    Onnipotente Proven Member

    Joined Oct 16, 2003
    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

Share This Page


Log in/Register to remove ads

Support Vendors who Support the DSM Community
Ace Race Parts Advanced Fuel Injection Archer Fabrication Boostin Performance ECM Tuning Extreme Turbo Systems ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions Jackson Auto Machine JNZ Tuning Magnus Motorsports Miller Import Parts Morrison Fabrication & Design OHM Racing Race Components Inc RockAuto RoadSurge Spultronix Performance STM Tuned Strictly Import Motorsports VR Speed Factory