very strange problem with car running!!

righto this is a strange one, i start the car, no throttle, leave it idleing its perfect, idleing for about 5 minutes, then i rev it, revs out perfect no missing or knocking etc, after about 30 seconds its starts to misfire badly:mad: knock it off, start it up again, idle perfect rev it perfect, then itll start to miss again!?:mad::mad: ive changed coil packs, injectors, coolant temp sensor, throttle position sensor still no good! i wwas gona unplug coil by coil when its missing to see which cyl is at fault but i noticed yesterday when it starts missin there a strange rattle coming from the head? but not there when its not missing!? anyonne have any idea!? the only thing i can think of is that the head was sat for a long time, the lifters wer drained, maybe it could be a sticky lifter or valve? hardly!?

I dont kno CA's at all!!

But perhaps not the coils but the sender unit or whatever its called, the yoke that sits on top of the cover like series 1 RB25's?

Quote:

---

Originally Posted by Cefiro Panch

I dont kno CA's at all!!

But perhaps not the coils but the sender unit or whatever its called, the yoke that sits on top of the cover like series 1 RB25's?

---

ya im goin to try that and a new set a plugs today!

:confused: ya mean the amplifier?

i reckon its the plugs lad

ecu... have you tried another ecu?

Defo the coilpacks Alan

its still a ca!!

did you check fuel pressure? sounds like its dropping after the prime?

maf sensor?