Rough Running R3434

[plaetime]

Hey peps, i am new to the forum cause i am having a b*tch of a time getting some straight answers from workshops. Story goes i have an 4 door r34 skyline with the usual mods (boost controller, bov, fmic, 3" turbo back exhaust, aapexi safc2) running 8 psi of standard turbo (175rwkw before fmic and afc2). The problem i am having is that since i had my 100000 service the car runs rough like it has dropped a cylinder, engine light comes on the dash and so does the tcs & slip lights. Almost sounds like a wrx is the best way to describe the sound. the service included timing belt and new plugs (iridiums). i have had the afm, cas, checked out and they are spot on. can anyone help?????? this has been going on for three months, it only does it when it's hot outside and i start the car...doesn't happen under load.

[The Mafia]

Its most likely not going to fix the problem but throw those iridiums in the bin to start off with.

Then maybe check your coilpack connections - That could fix it.

[plaetime]

Dude i think they're iridiums could be platinums i will check the reciepts, ive got some splitfires on the way, had them checked initially but it seems to be getting worse, cheers bud.

[The Mafia]

Get some NGK BKR7E plugs.

I'm not 100% sure if they are for the R34, but I have a R33 and use them - and they are perfect plugs.

[plaetime]

sweet will check out if they fit.

[webber]

actually on occasion my R34 engine does this too (in my R33) has done it twice when it has been over about 40 degree days and parked at work when i have gone to lunch. i thought it was something to do with the heat & my Power FC, a little rev for a min and it clears up fine, but yes also very unbalanced cylinder down sounding.

My engine has around 15,000 km's on it and when i brought it (from a 7000km wreck in japan 2001mdl) i replaced timing belt and everything (as i had it had been sitting since 2002).

Edited February 6, 2007 by webber

[plaetime]

thanks dude was there anything you had done to fix it or did it just go away??? it's kinda starting to piss me off a bit. especially if you are trying to impress the cute office girl looking at you when you start it.

[aphid]

is it running rich? did it happen straight after the 100,000km service? if so is it possible that base timing might be a tad out? sounds much like coils to me, so perhaps if the base timing was a tad out this could have been the straw that broke the camels back so to speak

[plaetime]

thnaks could be the case cause yes it did start after 100000k service. didn't do it at all before that. we shall wait and see the outcome of the splitfires.

[LTHL34]

hey mate,

i had the same problem on my r34 and it was the coil packs. i had heaps of trouble to but until i found the mechanic that i trusted everyone stuffed me around. by speaking to heaps of mechanics i found out that the coil packs on r34s are smaller than r33s that is why this problem happens. many r34s get this problem. Your best bet is to get bigger coils and not the same ones because the problem can occur again.

[Bass Junky]

yep, coil packs.

[plaetime]

thanks gents, the splitfires im getting are the 008 designed for the r34...i hope this helps. cheers for the info guys.

[666DAN]

Yep, the box next to me is 008 They'll sort all your dramas for sure.

[shnaped_second]

Just got a set of splitfire coils and my 34 is running great now, also replaced the plugs with NGK BCPR6ES