R33 Backfiring Badly, Help

[RyNo D]

hi guys

i put some new plugs in my car (ngk laser platinums) and when i accelerate,hard, and it comes into boost it constantly backfires and stutters resulting in no increase in speed. apparently these plugs are already gapped at .8mm, i will get them re-gapped to be sure but in the meantime can anyone offer some help??? cheers

[roy33]

when i changed my plugs recently, i forgot to connect the little earthing wire that comes off the coil pack loom, same symptoms as you.

[RyNo D]

when i changed my plugs recently, i forgot to connect the little earthing wire that comes off the coil pack loom, same symptoms as you.

hmm ok i'll chek that today, will let u kno how i go, thanx

[RyNo D]

when i changed my plugs recently, i forgot to connect the little earthing wire that comes off the coil pack loom, same symptoms as you.

hi roy, where abouts is this earthing wire and where/what would it normally be connected to?

[roy33]

small black wire at the end of the motor (closest to the passenger) coming off the coilpack harness just needs to be connected to the last bolt on you coilpack frame, if yours is a series 2 could be different because of no igniter pack not sure.