Ignitor Issues - I Think

[GUN32R]

All

I have searched the forums but have not been able to find the answer.

Basically I have traced a misfire issue to what seems to be the Ignitor - we had the car on the Dyno today, changed the Ignitor and the bad misfire between 3000 - 4000 when load comes on hard went away. We checked the coils (Spitfire) and the mechanic seemed sure it was the ignitor, as we tried 2 standard coils but same problem. Also we changed spark plugs, so eliminated that issue.

However, after driving the car a good 40km the problem is back??? I have a new G4 ecu, and the car has been fully tuned, mapped last week.

Do you think the ignitor is still the issue - the one we changed it to was not new?

If I get a HKS Twin Spark amplifier does that mean I wont need the ignitor?

Any other ideas?

[mad082]

well if changing the ignitor solved the issue last time you would assume at least some of the problem lies there.

what plugs did you put in? and how old are the coilpacks? if the coilpacks are old then they might be struggling. and it your spark plugs are gapped at 1.1mm that won't be helping the situation either.

[Moodles2]

All I can suggest is make sure the ignitor has a good ground.

[Mr GTR-32]

I had the same problem as yourself on the dyno my R32 GTR missfired from 3k to 4000 rpm badly.

I replaced my stock rb26 coils with the split fires and it was better, still we didnt know why, so then gapped the plugs down to .6mm was slightly better again bacause of small gappin, but still could not dyno car properly bacause of miss fire.

So after all this stuffing around i when out and bought 3mm cable and made extra custom earths for ignitor, engine , alloy rad, and notice a big improvement and the problem solver was changing the IGNITOR itself i got a good second hand one and by luck it worked fine then presto, the miss fire problems went and i was able to bump up the plug gapping up to .8mm and made more power cleaner and isues gone.

I think your ignitor could still be the problem if its second hand remember they are 15yr plus old now so finding a good cond old one is hard.

Cheers,

Dave.

[Adriano]

Check the dwell time on the g4, you may be cooking the ignitor.

[Beer Baron]

yep, my money is on G4 cooking the ignitor, or possibly faulty earthing. both are easy to check/remedy.

and no, the HKS DLI does not replace the ignitor. it's just added to the system.

[R.3.2.G.T.R]

any resolution to this issue??