Hey guys, only just recently i have had trouble with my engine misfiring bad. Its an R33 26 with big single in an R32 GTS-T, WOLF 3d, near brand new plugs gapped to .7, stock coils. It has never happened before until it was about 30deg the other night and usually after about 15mins of normal driving it starts.
I was driving along at about 4000 rpm in second and it started sounding like your typical boxer engine, and assumed an injector plug had come off as it's done it to me before. Checked all plugs and the problem stopped . . . maybe not. Started the car up, sounded good, drove along and it came back then disappeared, came back, disappeared etc. it even happens on idle sometimes (it's an extremely rapid misfire sounding like a machine gun haha)
Doesn't matter what gear or what rpm but gets really bad when you load the engine up or stay on constant throttle, and if you hit boost it will go away sometimes. The stock oil pressure gauge in the dash will get close to zero then jump to about 4, then just fall and rise as it pleases. Engine doesn't blow smoke and no oil in turbo inlet or exhaust.
I have checked all plugs and had to change number one as it looked fried (less than 2000km old).The rest still look new
Cut out each injector while car was running to see if there was no change on one. all good though
Changed fuel filter over in case it was blocked
I'm guessing i should just seal my coils with silicone and do a comp test but while i'm there should i be looking at anything else.
Any help appreciated