Rb20det Running Poor Sounds Like A Boxer

[SileNceR]

Hey

asking on behalf of a mate with an R32 GTS-T

Recently on occasion his car has been running poorly and sounding like a boxer. It's intermittent and happens while driving, sometimes from cold/cool, sometimes after driving for a while and then will sometimes just go away.

Any ideas of what to check? He has recently replaced coil packs but it is not really an ignition breakdown issue from the way it's behaving, perhaps a loose wire (but which?)

Cheers for any help,

Clinton

[cmoney]

Possibly the AFM playing up?? Does it experience any kind of power loss, misfiring?? When it runs poorly is the idle at the same revs it would normally be??

[QUICKY]

its ur coils. check al d connection to them are nice and tight, but most litely ul need to replace ur coilpacks

[PM-R33]

100% one of the coil packs or a spark plug. A RB sounds like a WRX when it drops a cylinder and runs on 4 or 5.

Easy way to check, when the car is idling, unplug the coilpack on cylinder one. If the note of the exhaust changes it's not that one. Plug it back in and go to the next. Keep doing this for all six until one of them doesn't change the cars sound. Thats your dropped cylinder.

Edited April 13, 2009 by PM-R33

[The Dan]

Anyone ever heard of an injector?

duh

no but it's DEFINITELY YOUR COIL PACKS lol

[cmoney]

Doesnt the 1st post say he just recently replaced the coil packs??

Hope you replaced em with Splitfires....

Just thoroughly go over all the ignition wiring & see if you can find anything. Does sound like a general coil pack issue.

[SileNceR]

Doesnt the 1st post say he just recently replaced the coil packs??

Hope you replaced em with Splitfires....

Just thoroughly go over all the ignition wiring & see if you can find anything. Does sound like a general coil pack issue.

They were replaced with a known good second hand set, so it could well be that the "new" ones are now failing also.

Will try those suggestions, thanks.

Edited April 13, 2009 by SileNceR

[TTT]

might as well change the plugs while the coil packs are out.

NGK BCPR6ES (already gapped at 0.8mm) are only about $3 each.