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Need Help Diagnosing Missfiring Problem R32

PL@YER

By PL@YER,
in General Maintenance

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PL@YER Contributor

PL@YER

Posted
Posted

Hi need help finding out what the problem is with my car...Basically My car sounds like a V8/Boxer engine (mIssfiring) constantly once it gets to temperature. Ive replaced the spark plugs, but to no avail the problem came back again.

Could it be

-Coil Pack

-Igniton leads

-I installed the spark plugs wrong

Any help would be appreciated.....by the way I drive an 1989 R32 GTST 4 door

Race_Bred Enthusiast

Race_Bred

Posted
Posted
Hi need help finding out what the problem is with my car...Basically My car sounds like a V8/Boxer engine (mIssfiring) constantly once it gets to temperature. Ive replaced the spark plugs, but to no avail the problem came back again.

Could it be

-Coil Pack

-Igniton leads

-I installed the spark plugs wrong

Any help would be appreciated.....by the way I drive an 1989 R32 GTST 4 door

coil packs

your car doesn't have leads does it?

JVP Grand Master

JVP

Posted
Posted

missing at idle, or in the rev range? ie, 4500rpm-5500rpm?

mine is missing at idle, re gapped plugs to 0.8mm, installed splitfires.

still there...

my tuner said its common for r32s, and diagnosing it is near impossible.

he said a retune on my remapped ecu will fix it (hopefully)

jasont82 Community Regular

jasont82

Posted
Posted

do the silicon trick. i have missfire at the moment too. didnt want to fork out for splitfires till i knew it was the coil packs. siliconed em up worked for about a week. but at least i know its the coil packs. splitfires are on their way.

few people are buying splitfires only to find they didnt fix it. alot of money spent and still miss fire. my suggestion, silicon em up for 11 bucks then if it fixes it you know you need new coil packs. if not either you didnt seal em up good enough or your problem is else wear.

just my 2 c :)

Zas)-( Community Regular

Zas)-(

Posted
Posted

:) missfiring aye...take ur plugs out get a feel guage n have a look mate not all da plugs are CORRECTLY GAPPED sumtimes dere abit out ya no.. n put em back in with care if not get a mate who is a mechnic to put em in if your not quite confident in your own skillz...

i never thought it was the coil packs... was it happening before you changed the plugs???? :ninja:

what did u change before it started to do this? :)

was there any odd behaviour before tell us this stuff so we can give ya sum 'elp

PL@YER Contributor

PL@YER

Posted
  • Author
Posted

Alright I took out me old mate Coil out and found a some what small amount of oil inside the 5th cylinder...took out the spark plug and there seemed to be oil all over that too...Anyways No more missfiring once I put it back in, I noticed white smoke coming out the exhaust as well as a perculier burning rubber smell comng out the side around the engine plemum cover.

murrayis Mentor

murrayis

Posted
Posted

I'm having the exact same problem and OP stated in my 32, pops and farts once its warm, sounds the same as hitting fuel cut.

Changed plaugs checked all the gapping, changed ignition pack, but still the same problem

Parker Collaborator

Parker

Posted
Posted

Pull the plugs out and see which one is the 'dirtiest' after it has been missing. This should indicate the cylinder which is missing. Then systematically change the plugs and then packs from cylinders that are working for the one that is missing. This will allow you to diagnose whether your problem is related to the plugs or coil packs.

If this doesn't solve the problem (like on my car) then it will probably be the wiring from the ignitor or the ignitor itself (like on my car:)) Just try and borrow these bits from a fellow skyliner and your on your way.

Hope this helps.

R32_Damo Community Regular

R32_Damo

Posted
Posted

i got a non fire problem my number 1 cylinder isnt firing. ive got spark test coil out with a plug in it, injector is ticking away.

only prob is the plug isnt covered in unburnt fuel tho, Dirty/ cloged injector maybe? i test injector out of fuel rail it sprayed but didnt seem much, i dunno what it could be?

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