What Was Your Spark Plug Gap?

[giantsnation]

I left mine at the .028 spec because I am getting the trifecta tune.

[ShawnB]

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.

[obermd]

ShawnB, do you have a tune? I ask because I have no problems with 0.035" and I live in Colorado.

[ShawnB]

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.

[obermd]

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).

[ShawnB]

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.

[bryanakron40]

Shawn, were they actually fouling or were you getting misfires?

[ShawnB]

They were misfires...

[bryanakron40]

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.

[XtremeRevolution]

Just a quick note; I did run my plugs at .038" for a while, and did not get spark blowout until I went up to .040".

Sent from my SGH-T999 using AutoGuide.Com Free App