GTR Missing and running crap

[wattsygtr]

Please can anyone help? I own a 97 Skyline GTR that is running on 5 cylinders most of the time. I have taken the car to Nissan and they have replaced the plugs and number two cylinder coil pack, and the problem is still there. Nissan can’t find the problem and they can’t find anyone that will look at the car either. I think it has something to do with the electronics but not sure. It runs like crap nearly all the time now, but if I put it under a little boost while its cold it runs normal till it warms up then runs crap again. If anyone has any ideas on how to help it would be greatly appreciated. Cheers

[DAN00H]

mate, sounds electricial - check the connectors for the coil packs to ensure there are no broken wires. with the car running, remove the plug into the coil pack of no.1, it is is worst, than no.1 is fine. repeat through to no.6. when you remove one that makes the motor run no worse - then that is the likely coil pack that is breaking down.

It may not actually be the coli pack, so check all the wiring closely. if it looks good, then put the good coil pack (the newie from Nissan) into that location and see if is still misses on that cyl.

if so, than is it the loom for that plug somewhere. if it fixes that cyl, then it is the coil pack.

let me know.

[wattsygtr]

mate, sounds electricial - check the connectors for the coil packs to ensure there are no broken wires.  with the car running, remove the plug into the coil pack of no.1, it is is worst, than no.1 is fine. repeat through to no.6. when you remove one that makes the motor run no worse - then that is the likely coil pack that is breaking down.

It may not actually be the coli pack, so check all the wiring closely.  if it looks good, then put the good coil pack (the newie from Nissan) into that location and see if is still misses on that cyl.

if so, than is it the loom for that plug somewhere. if it fixes that cyl, then it is the coil pack.

let me know.

Thanks

I know that its the no.2 pack as i have checked it like you said. wiring all looks good too, so dont know what now. its definately the no. 2 thats all i know right now.

[DAN00H]

have you swapped the no.2 coil with one of the others? is it still dead on no.2? if so, look inside the loom plug, as it may have broken a pin.

[confuzion]

yeah swap no1's coil pack into number 2 and see if number 2 is still missing etc

if number 1 starts missing you obviously know its the coilpack