What Was Your Spark Plug Gap? - Page 32
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Thread: What Was Your Spark Plug Gap?

  1. #311
    1st Gear jstoner22's Avatar
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    0.028 all around. They stayed as is. Upper end of the recommended stock gap is fine for me.

    2012 cruze eco MT

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  3. #312
    5th Gear giantsnation's Avatar
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    I left mine at the .028 spec because I am getting the trifecta tune.

  4. #313
    Handbrake Released ShawnB's Avatar
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    Well after 2 weeks of running at the suggested .035, I was running into issues. The plugs were burning too hot, and fouling out. So, I re-gaped them to .030. Did that 3 days ago, and so far no issues. The car had a lot more Pep at .035, but climbing the mountain to my work was causing the plugs to foul out. No fouling issues yet tho at .030, but lost some of that pep.
    gt_cristian likes this.

  5. #314
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    obermd's Avatar
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    ShawnB, do you have a tune? I ask because I have no problems with 0.035" and I live in Colorado.

    2012 ECO MT - Black Granite/Cloth; 814 mile range; Bluetooth Stereo AUX; OEM Fogs w/Chrome Covers; GM Spare tire; VG Shark Fin
    2010 Mit Lancer GT MT (traded for ECO @31K miles)
    2002 Pont Montana AWD (traded for 2012 LS @182K miles)
    1990 Pont Transport (traded for Montana @240K miles)
    1986 Fiero GT MT (traded for Transport)
    1985 Fiero 2M4 MT (traded for Fiero GT @8K miles)

  6. #315
    Handbrake Released ShawnB's Avatar
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    Quote Originally Posted by obermd View Post
    ShawnB, do you have a tune? I ask because I have no problems with 0.035" and I live in Colorado.
    No Tune, I only have the K&N Typhoon Short Ram Intake.. Oh and I ALWAYS run 93 Octane from either Shell or Sunoco.

  7. #316
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    Quote Originally Posted by ShawnB View Post
    No Tune, I only have the K&N Typhoon Short Ram Intake.. Oh and I ALWAYS run 93 Octane from either Shell or Sunoco.
    OK - which engine? 1.8 (LS) or 1.4T (all others). The 1.8's spec has always been 0.028". The 1.4T spec in the US was originally 0.033-0.037" (GM Maintainence manual) and is now 0.025-0.0275" (GM Powertrain letter to XR).

    2012 ECO MT - Black Granite/Cloth; 814 mile range; Bluetooth Stereo AUX; OEM Fogs w/Chrome Covers; GM Spare tire; VG Shark Fin
    2010 Mit Lancer GT MT (traded for ECO @31K miles)
    2002 Pont Montana AWD (traded for 2012 LS @182K miles)
    1990 Pont Transport (traded for Montana @240K miles)
    1986 Fiero GT MT (traded for Transport)
    1985 Fiero 2M4 MT (traded for Fiero GT @8K miles)

  8. #317
    Handbrake Released ShawnB's Avatar
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    I have the 1.4T with a 6Spd Manual. Only 6000 miles on her... Running Castrol Edge Titanium Full Synthetic. Not dexos approved, but I love Castrol Edge. My 98Grand Prix ran it for 6 years, with 170,000 Miles, and motor ran like it was brand new LOL


    Stock gaps were .023 across all 4 plugs when I took them out a month ago to re-gap them.

  9. #318
    1st Gear
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    Shawn, were they actually fouling or were you getting misfires?

  10. #319
    Handbrake Released ShawnB's Avatar
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    They were misfires...

  11. #320
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    OK. Sounds like spark blowout on yours. One reason I stayed at .032". If I get a tune, I may drop the gap if I run into anything.

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