What Was Your Spark Plug Gap? - Page 32

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Thread: What Was Your Spark Plug Gap?

  1. #311

    obermd's Avatar
    Join Date
    Mar 2012
    I run my ECO at 0.035" without a tune. With the MT there is noticable difference in low RPM power vs. 0.025", regardless of octane.

    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)

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  3. #312
    2nd Gear Ru5ty's Avatar
    Join Date
    Jun 2012
    Quebec canada
    2012 cruze 2 lt rs 1.4l turbo

    2 were at .25 , one .23 one .27

    i was blown away

    they are all .35 now
    2012 Cruze RS 1 LT Turbo+ Victory Red

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  4. #313
    Driver's Ed BlueTopaz's Avatar
    Join Date
    Aug 2012
    Goldsboro NC
    I just checked my spark plug gaps on our 2012 LT/RS 1.4l and they were all at 0.024 so I bumped them up to 0.032 to see how much of a difference it makes. I found the yellow Lordstown Assembly sheet in the car dated 11/03/11 Time: 01:48:01

  5. #314
    XtremeRevolution's Avatar
    Join Date
    Jan 2012
    SW Chicago Suburbs
    Quote Originally Posted by Arctic Cat ZRT View Post
    Well this weekend I will be home some college, and I am going to be checking the gaps, hopefully if I have time! Now as I was reading through and the GM spec is .35 gap, I also see alot of people going to .30 gap. Which on should I choose? I have the resonator disconnected, and planning to put a K&N filter drop in. I do not have a plan for a tune in the near future.
    I tried .030 after some time at .035 to see how it would feel, and I'm not sure I like it. There's notably more engine vibration at .030 and .033 than there is at .035.

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  6. #315
    Handbrake Released ShawnB's Avatar
    Join Date
    Feb 2012
    Saint Clair, PA
    Hey XtremeRevolution,

    I checked my plugs today and here are my results.

    2012 Cruze 1LT RS 6 Speed Manual
    Mods - K&N Typhoon SRI
    Also, I always run 93 Octane Fuel
    Factory Gap - .022-.023
    Re-Gapped Plugs to .035

    I have noticed a much better response in throttle and turbo through 1500-4000RPM Range. I try to keep my shifts to about 3500RPM, but I opened her up a little today with the new gaps and wow.. Before if I was in 4-6th and below 2000RPM the motor just did nothing. Now I can go as low as 1400-1500 RPM and the motor now has life.
    XtremeRevolution likes this.

  7. #316
    Driver's Ed
    Join Date
    Oct 2012
    Checked mine today. 2012 Cruze LTZ

    They were as follows:
    #1: .026
    #2: .027
    #3: .027
    #4: .026

    I changed them all to .035... Haven't had a chance to drive it yet but I'm hoping I will see a difference after all the posts I've read. Will report back if I find any problems.

  8. #317
    5th Gear giantsnation's Avatar
    Join Date
    Oct 2012
    Albany, NY
    I wonder if 2013s got fixed. I just checked mine and they we all at .027/.028 (tough to see the exact gap). But either way they we all the same at factory specs. Mine is 2013 eco mt with 1,588 miles
    gt_cristian likes this.

  9. #318
    Handbrake Released
    Join Date
    Nov 2012
    Akron, Ohio
    I did the regap on mine yesterday. Mine were all at .027" but I changed it to .032" to see how it does. GM has some of the best ignition systems in the world, so I believe the coils can take the extra gap and not cause any running issues.

  10. #319
    Driver's Ed
    Join Date
    Feb 2012
    Southwestern Lower Michigan
    I have 2012 ECO A/T, all stock. Plugs where between .024 and .029, used 87 octane. Changed to all .035. Did not notice any big difference. After reading all the posts I determined that a stock 1.4 motor ran best at .028. Changed all to.028 use Shell mid-grade. The car runs great. IN my opinion having your plugs gaped all the same is the most important.--Mike
    XtremeRevolution likes this.

  11. #320
    1st Gear jstoner22's Avatar
    Join Date
    Aug 2012
    Amherst, Nova Scotia
    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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