Misfiring Plugs? Skyline R33

[bzd82]

Hi guys, i have a r33 skyline auto with basic mods, cooler, full exhaust, splitfire coils, platinum plugs, pod filter, bleed valve, running 12psi. i have had these platinum plugs in now for about 10000kms with no problems at all and i carefully gapped them to .8 when i installed them. lately i have put a turbosmart blow off valve type 3 atmo vent, and my mechanic friend and i done the timing belt. but now everynow and then my car will misfire when i give it some. does anyone know why its doing this? is it the plugs? its been running sweet with these plugs last 10000kms, could the blow off valve be somehow making my plugs foul up? i wouldn't have thought so but hey u never know? its done 77,000kms series 2. should i just go get cheap copper plugs and get rid of the platinums, any help would be good? Dan.

[PIOTREK]

its the bov 100%, wat ecu u running? it needs to be tuned. had the same issue. do a search and it will come up plus there is a sticky

[BensDR30]

Lose the BOV, or recirculate it.

[PIOTREK]

look i found that even trying to loosen it, it was still back firing. the only way to fix it was to remove it full stop or have it tuned. U might be more lucky or patient lol

as an experiment, take it off and u will find that your will be running fine

Edited June 18, 2009 by P1OTR

[BensDR30]

lol, that's that I said - 'lose it' (i.e. take it off)

[bzd82]

thanks for ur input guys, i put another tank of fuel in and its running sweet again, dunno mite have been a bad batch of fuel, but my bov does make my car almost stall sometimes which may be making the plugs foul. so i'm gonna see if i can buy the attachment to make it plumback otherwise i'll just put the standard one back on, thanks again.

[LeCoq]

blow off valve's can work with auto skyline?? hmm i didnt know dat lol