Track Guys/tuner Help Please.

[rockabilly]

hi all. my 33gtr runs about 600 bhp @ the fly. last weekend whilst on silverstone curcuit/uk i had a bad misfire issue. came off track and removed plugs and coilpacks.. 4 were white in colour two where black. so hence the misfire. noticed the coilpacks were red hot, i still have my plug cover fitted as i have a vented bonnet and water is an issue in the uk. anyway let the coilpacks cool fitted them back on and cleaned the two plugs up with a cloth. did not fit the coilpack cover and went out for 2 more sessions no more problems.great. but i would like to run with my cover fitted is this impossible or do i just have a couple of faulty packs. cheers bernie.. p.s. temp outside was about 25 deg on the day.. each session lasts 20 mins and silverstone is 3.3 miles a lap..

[Beer Baron]

are they still standard coil packs? you could modify the coil pack cover for some venting, i've seen it done before.

[R31Nismoid]

@ 450rwkw... i wouldnt be using the cover

There is just too much heat in there.

[rockabilly]

@ 450rwkw... i wouldnt be using the cover

There is just too much heat in there.

cheers guys was not sure what kilowatt figure was. it has splitfies in it. here,s the dyno.. and has nobody designed a cold air feed to the cover?. cheers bernie/uk

Edited September 16, 2006 by rockabilly

[Gav]

cheers guys was not sure what kilowatt figure was. it has splitfies in it. here,s the dyno.. and has nobody designed a cold air feed to the cover?. cheers bernie/uk

Coils are the "usual suspects" when diagnosing misfires, however, check the ignitor module as a culprit of hot temp misfires.

Also worth checking the condition of the coil pack harness - particularly the connectors and the earthing lug.

Edited September 16, 2006 by Gav

[rockabilly]

Coils are the "usual suspects" when diagnosing misfires, however, check the ignitor module as a culprit of hot temp misfires.

Also worth checking the condition of the coil pack harness - particularly the connectors and the earthing lug.

cheers gav will do.. i know the earth,s are ok will check the harness too..bernie.