I have an occasionall misfire on 1 cylinder when the car is fully warmed up, however not when its first started, doesnt seem to missfire when revs are held, just on idle, any ideas without me looking?

maybe something to do with the coilpacs heating up and breaking down

Maybe some wiring,with vibration looses continuity or coil pack,have you checked them.

Maybe some wiring,with vibration looses continuity or coil pack,have you checked them.

 

I did have a quick look at the coilpacks, to be honest i think its got to be a coilpack or plug, but with when it idles high its fine, so could be a fueling problem. The mods are:

 

JWT chip of some sort

Profec B II as far as i know running just over standard boost

Full stainless turbos back

maybe something to do with the coilpacs heating up and breaking down

 

Thats what id think, shouldnt be a fueling problem, just gotta find out what cylinder, i know its on the passenger side bank anyway

After changing the plugs on my car in only ran on 5,had a fiddle with wiring to plugs and its been fine since.

loom? always a bit suspect. Try swapping coil pack from 1 to somewhere else and see if the miss moves with the coil pack. If no then swap the plug. If still no then check the loom. Might also be a vacuum leak

Edited May 7, 200916 yr by radron

Ill have a check over the weekend if i get time cheers guys