Help! R33 Misfiring

[Curry41289]

Hey Guys,

I'm new to Skylines Aus. as I searched the net for a possible answer for my problem.

My R33 seems to be misfiring when its under load or around 3 quarter boost to full boost. I can only feather the accelerator as when I give it a boot full, it kicks and splutters and backfires.

If anyone else has had this problem, please comment as I miss my beast goin hard!!! lol

Cheers

[cmoney]

Could be a number of things, but this heat recently wont be helping.

Id check coil packs as a priority, then maybe spark plugs. You said R33 S2, so you dont have a separate ignitor module if im correct?? If im wrong, ignitor module would be a good place to look also.

The only other thing would be what octane fuel are you running it on??

Unrelated question....you wouldnt happen to live around St Clair (NSW) & drive a white R33 S2 would you??

[payback21]

By the sounds of it, i would say plugs. They need to be re-gaped to 0.8 or replaced. What boost you run?

[ClutchBurndout-:(]

the only reason you would need to regap plugs to .8 is if the coilpacks are tired, if your coilpacks are fine you run standard gap.

if you have the original coilpacks, i suggest taping them up, or buying some new ones, factory coilpacks get tired beyond 100,000km

i was having the same issues, i changed to splitfires, problem solved

[mad082]

as matt said, more than likely tired coil packs. putting in plugs with a smaller gap is simply a band-aid fix to the problem and it will only get worse.

[payback21]

the only reason you would need to regap plugs to .8 is if the coilpacks are tired, if your coilpacks are fine you run standard gap.

Some people gap there plugs (including myself) to .8 on higher than standard boost. This is why i asked what boost he was running. On higher than standard boost engines, the more boost pressure tends to blow out the spark because of the gap being too big making the spark jump all over the place. (Hence why its breaking down). A little trick Denzo told me about a while ago.

Coilpacks maybe another fault. Its a trial and error problem.

[mad082]

with healthy coilpacks you should be able to run higher boost (at least on the stock turbo) with the standard 1.1mm gap. mate of mine with yellow jackets is running 1.1mm on about 13psi with no problems.

[Curry41289]

Thanks lads.

I'm running only 7psi of boost I've never adjusted it, but i will be sure to check out the coil packs at night, it should look like a circus under the hood with the cover off if the sparks leaking!!

And for the first comment, nah sorry i'm in Batlow near Wagga Wagga, drivin a gold repsray R33 with a JUN body kit, black hood and side mirrors, aftermarket front mount, stock turbo with a HKS BOV and an Xforce 3 1/2 inch exhaust. And HRS Pegasus Black rims, 19s.

Got 130,000 clicks on the odo, but I bought it with 115,000.

Will post a pik soon

[cmoney]

Ah cool man. Its funny cos theres a local guy here who is on green P plates & drives a white S2 R33, it was misfiring like all business the other day when he went past....good luck with it man. My money would be on coil packs for sure by the sound of things....

Cant wait for a pic

[Spurdo]

I'm running only 7psi of boost I've never adjusted it, but i will be sure to check out the coil packs at night, it should look like a circus under the hood with the cover off if the sparks leaking!!

if they're only breaking down under load, then this wont work. having the vehicle stationary and revving it in neutral wont create any boost, and therefore no load, and the the spark will probably get through just fine. if you do manage to get the light show with no load on the engine then yeah the coil is well and totally had it

[mad082]

you may still see visible arcing out at idle. i know that when the leads when on a falcon i had were stuffed, it would only miss under load, but the arcing out was visible at idle.

[Curry41289]

Ah cool man. Its funny cos theres a local guy here who is on green P plates & drives a white S2 R33, it was misfiring like all business the other day when he went past....good luck with it man. My money would be on coil packs for sure by the sound of things....

Cant wait for a pic

Haha unfortunate, but now I don't feel so bad

Any idea where I can get some decent coil packs for a decent price?? Splitfire's if possible.

I had a look on Just Jap (which is a sweet site if you donit already know about it (www.justjap.com) and splitfires are around $650 but if thats wat it takes to get my car running perfect well then I'll just have to break the piggy bank once again. I hate ebay by the way, ya really don;t know what your getting sometimes

[oscar32]

Haha unfortunate, but now I don't feel so bad

Any idea where I can get some decent coil packs for a decent price?? Splitfire's if possible.

I had a look on Just Jap (which is a sweet site if you donit already know about it (www.justjap.com) and splitfires are around $650 but if thats wat it takes to get my car running perfect well then I'll just have to break the piggy bank once again. I hate ebay by the way, ya really don;t know what your getting sometimes

Nengun.com

I think they are around 450ish or something.