spark plug gap ?

[feifong]

what is the gap on plugs i have afr 165's and im using autolites. Is the gap 44 i pulled a plug out and it was at .030 what happens to the car when the gap is wrong?

 

[Tonys96Cobra]

Factory gap is .054

 

[HISSIN50]

If the gap is too large, one can see high RPM missing.
If too small, it can leave some performance on the table.

 

[Treachery]

A symptom of too large of a gap is sudden power loss at high rpm's. The spark gets blown out, like blowing out a candle. Proper gapping also depends on what modifications you have, if any.

I had my Autolites gapped at .035 and they kept blowing out when i was getting dyno'd (many engine mods). No one knew why. 3 mechanics/tuners couldn't figure it out. Then someone in this forum suggested decreasing the gap - hallelujah!

 

[feifong]

the end of my plugs are white what is this too lean?

 

[jjd975]

White is lean. I run .050 gap

 

[DABEAN212]

A symptom of too large of a gap is sudden power loss at high rpm's. The spark gets blown out, like blowing out a candle. Proper gapping also depends on what modifications you have, if any.

I had my Autolites gapped at .035 and they kept blowing out when i was getting dyno'd (many engine mods). No one knew why. 3 mechanics/tuners couldn't figure it out. Then someone in this forum suggested decreasing the gap - hallelujah!

So this could be why my car starts misfiring bad at around 4500 rpms? I couldnt get a good pull on my dyno tune because of this problem and the only thing they said to do was change the plugs. I will put my new plugs at .030 then...thanks!!!

 

[Strype]

Factory gap is .054

For 91-93 .054

For 90 down it's .044