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What Was Your Spark Plug Gap?

136705 Views 474 Replies 193 Participants Last post by  snowwy66
If you changed your spark plug gap per this thread or this thread, please report what the original values were here. If you have yet to change them, please remember to report the original values.

My case with GM has been escalated to a district case manager at GM to hopefully get some exposure on this issue. My primary goal is to allow people to go to their dealerships and have their spark plug gaps checked and corrected (as there has been a 100% error rate so far), and the more people and numbers I can present them with, the better.

If your username is on the below list, I already have your numbers down. If not, please post them. I need specific values, such as ".022, .023, .025, .025." I will also need the model year of your Cruze.

We have 37 cars recorded so far. I'd like to get at least 50. My current spreadsheet is also attached.

InsaneSpeed Steve
sciphi
garrettb1
Rosstude
wilde74k
rlw1224
crazylegs
ozman2005
audiobahnman
calintz
charlie_t
cecaa850
Chevyderek72
Ian_12
whatsstuckk5
XtremeRevolution
coinneach
tecollins1
Beachernaut
Red Dragon
twin1987
churdler
Vetterin
UR2N0Z
Higgs Boson
silverram323
OnlyTaurus
jblackburn
H3LLON3ARTH
SlvrECObullet
Campuscop2003
haoleboy
weimerrj
UpstateNYBill
EcoCruzer
danimal

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looking at your spreadsheet, seems we should also be recording model years also. My 2012 was .019,.024,.025,.024
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Wow. Those are all much lower than the average, and the 2nd person who has reported a .019 gap. How's it run now?

I had one at .019(which you recorded before I assume since I posted in this thread), My automatic had a surging missing type feeling between 1,200-2,000rpm when under load. That is completely gone, the engine feels like it makes more power. also seems to not struggle(revs quicker) above 4,000rpm.


EDIT: looking at the spreadsheet looks like my numbers were not recorded(the numbers are posted on the first page of the thread) My 2012 1LT auto was .019,.024,.025,.024
Well i checked mine today and there gap was all .019 so i regapped them all to .035 and i have a 2011eco mt
Would love to hear if you noticed any difference in your car, I bet it revs up quicker & has a much smoother idle & throttle response. GM should be checking all cars with as many of these that are out of spec.
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