Thanks Smurf,
I've done full top end rebuild, all torque to specs. Cars running stage 2 setup. Gt28r turbo, 444cc stge2ecu, r33 fmic. Straight through exhaust.
I don't think its fuel now cause all plugs are covered in fuel, leaning towards either air or or spark possibly.
Checked air connections intercooler vac lines all seem ok.
If WOT engine sounds deep but no fire. Checked coils same volts all around no codes on ecu. Pulled spark plugs yesterday all are covered in fuel. Thinking now maybe needs colder plugs but not 100% on that 1 because I've installed a bigger gt28r turbo. Dont know why else it wouldnt fire all of a sudden, timing checked.
I put in clean splitfire platinum plugs and it started was running ok few days back slight pinging on slow revs down almost preignition sound from within the engine. But was idling. 1 thing we noticed pulled vac line off fpr no difference. Sure, fpr needs to be changed but does that cause plugs to be wet all 4 and not start? However when it was running idle was very high so we pinched fmic pipe to steady idle lol. Can't be maf cause disconnected it still the same
engine just cranks plugs totally wet CS adjusted to see if it would fire retard/advance still no fire.