Did a tune up and after it put a multiple cylinder misfire code, I can hear it misfiring in the exhaust it sounds horrible. Not sure where to go from here any one have any ideas ? Only work done was new plugs seemed simple enough

 

this happend to me i pulled the plugs baq out and put them back in again and it was fine . Make sure all connectors are attached correctly also make sure everything torque down enough also did you check the gap ??

 

Did you complete one plug change at a time? Make sure each plug harness connected back, to plug it was pulled from? Disconnect battery terminal before doing plugs?

 

Ya checked the gap .45 if I recall plugs matched the old ones I actually did repull the caps back off and sprayed them out with throttle body cleaner and re attached them but still misfires I guess the only step now is to get new plugs and replaces them all and see if that fixes it. Other than that I don't no what could be an issue

 

Did not disconnect battery before did plugs is that an issue ?

 

It would've made much more sense to use MAF cleaner, than TB cleaner.

Even if you think you did, recheck that everything is hooked back up.

 

I forgot why you're supposed to but you are. I believe it could short something if batter is not disconnected prior.

 

just an FYI

I had a misfire. opened uprev and found out i was running 110-120% fuel trims. replaced fuel entire fuel pump assembly with junk yard unit for cheap, and everything is good now. the filter on my second gen car is within that assembly, I wouldnt doubt mine was occluded. make sure you classify your misfire as lean or rich type before you go diving in.

 

Cipher is a good tool.

 

It's got to be sims cause it ran fine rite before I hanged the plugs so I no it can't be anything to crazy

 

Simple *