dave900rr

So my engine light came on and its saying miss fire on 3 cyl. I just got a Treifecta Tune about 2 months ago. Is this common??????

sstupid

No. How many miles on the sparkplugs?

tomj77

iTrader: (2)

i get misfire from time to time, ni big deal, clear it and keep trucking, if it keeps happening frequently, then id think something is wrong

Fastgti69

Did you no lift shift?

dave900rr

i just replaced the plugs about a hour a ago pretty sure they had never been changed. and yes i was driving it pretty hard the other night. So I'll just clear it and see what happens.

sstupid

Did you gap them? Are they the OEM plugs?

Boosted4

I don't know how many miles your car is working with but regardless if you are tuned and the plugs have never been changed, it most certainly was a bad plug causing the misfire. When you are tuned, it's recommended to change your plugs more frequently than if you were running a stock car. Personally, since I am tuned, I change my plugs every 15k miles or so just for peace of mind even if I'm not seeing any misfires.

slowbalt262

Run a compression test and see if you have low compression in cyl 3