Misfiring Please Help And Yes I Have Searched

[MrRx7s3]

Hey guys I need some help here, and I have searched but all I could find is the usual missfire on boost at 4500rpm which isn't my case.

I have a r34 GTT and suddenly today out of no where when I turn it on and its cold its constantly misfiring as if its only running on 5 cylinders.

Once warm or normal temp I should say its ok only flutters abit here and there but at any time not only on boost.

I was thinking coil packs but wouldn't it be worse when it warms up if it were coil packs rather than spark plugs, e.g. when my trail bike wouldn't start pull the plug out heat it up with a lighter and shes sweet.

I will list my mods below, and thank you for any help in advance, thanks.

POWER FC.

220RWKW.

STOCK TURBO 11PSI.

FRONT MOUNT.

YELLOW JACKETS INSTALLED ABOUT 5000KMS AGO JUST BEFORE THE TUNE.

3" CATBACK EXHAUST WITH HIGH FLOW CAT.

I WAS RUNNING SOME 5 TEMP IRIDIUM PLUGS WITH A 1.1MM GAP AT TUNE BUT IN SUMMER STARTED TO GET SOME KNOCK AND THE TUNER TOLD ME TO PUT PFR8B9 (0.9MM GAP) IN AND THAT WAS DONE ABOUT 1-2000KMS AGO.

POD FILTER.

V-POWER FUEL.

[MrRx7s3]

Also how can I test my could packs, thanks.

[JSF]

You can't test them.

Here are your options;

Replace spark plugs at gap them to .7 or .6 whatever.

Ask someone to borrow their coilpacks to see if your coilpacks are playing up. Do not buy Splitfire or Super Spark, they're cactus just buy new Nissan OEM spark plugs they're just as good.

Check your ignitor pack thing (This was my misfiring problem). I did EVERYTHING only to find out it was the ignitor pack.

Replace fuel filter, if it's old and clogged up then that will be the problem.

Anything else could be cylinder issues, but you'll probably see it on your spark plugs.

Try turning down the boost as well and that may tell you/give you abit more info as to what could be the problem.

If you don't have a boost gauge, then put one on to see if you're spiking.

[MrRx7s3]

Hey thanks for the quick reply, whats the ignitor pack? you got a pic? and how can I test it? I've got a boost gauge and I'm not spiking thankfully, I have my standard coil packs so ill throw them back in and see, I was thinking of throwing my old 5 temp plugs in just to check it and see if I've got a dud spark plug, I really want a front facing plenum :'( what a biatch just to get to the spark plugs or coil packs haha lol, would I be able to tell if i dont put the cooler piping back on and just check it on idle to see if its missing or would that be yet another problem? I've heard that it could be the CAS? is this true? well I'll try the plugs first tomorrow then the coil packs and see, thanks.

[JSF]

If it's misfiring then it's a ignition/fuel problem. Plugs, Coilpacks, Fuel Filter or Ignitor pack. I'm not sure if the RB25DETs actually have them. Sorry i thought this was in regards to an rb20.

[GTSBoy]

R34 has no ignitor. Each coil has its own built in.

Swaptronics with new/known good coils required as said above.

[Kane_R32]

Do not buy Splitfire or Super Spark, they're cactus

Got proof?

I dare say alot of SAU members run or have run Splitfire's without any issues. Good bang for buck coil mod

I'd take a stab and say the cheap yellow jacket coils probably has a faulty one - seems to be common

[QUICKY]

had the exact say problem on my r34.

when the car was cold, it would misfire and run on 5 cylinders (Sounded like a rexy and drove like shit). it would get better once it warmed up.

bought a set of splitfire coilpacks and problem fixed.

hope that helps

[wolverine]

Do not buy Splitfire

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Oh dear.

Splitfires and OEM are the best bet for coils the others have a chequered history.

[JSF]

Got proof?

I dare say alot of SAU members run or have run Splitfire's without any issues. Good bang for buck coil mod

I'd take a stab and say the cheap yellow jacket coils probably has a faulty one - seems to be common

Feel free to come to Berwick (Victoria) and put in the splitfire Coilpacks i purchased from CJ Motor. I'll show you my ebay history for when i purchased them and how much.

[kitto]

Feel free to come to Berwick (Victoria) and put in the splitfire Coilpacks i purchased from CJ Motor. I'll show you my ebay history for when i purchased them and how much.

Huh? The point of that is what exactly?

[JSF]

He asked for proof. I've got proof of 3 week old splitfire coilpacks failing hard.

[GTSBoy]

Yeah. You're part of the <1% failure rate.. Bad luck, suck it up. The rest of us are having no trouble with them.

1 or 2 bad experiences does not a bad product worthy of your 1st post make.

[Tommmay]

Is the Gains from the Coilpacks even Noticeable

I learnt my lesson buying Msds on my commodore waste of cash lol

[GTSBoy]

Of course the gains are noticeable -- if your old coil packs are breaking down under the load.

[JSF]

Yeah. You're part of the <1% failure rate.. Bad luck, suck it up. The rest of us are having no trouble with them.

1 or 2 bad experiences does not a bad product worthy of your 1st post make.

Well, yes it does. Splitfire has a aura of "YE BRO THEYRE THE BEST! BELIEVE IT!" when in reality, they failed hard for me. Splitfires may be good for your honda running 160fwkw but for me it could barely handle 260rwkw before breaking down.

Edited June 3, 2013 by JSF

[MrRx7s3]

Well all that aside because its off topic haha lol, if use were wondering it looks like I've found and solved the problem, somehow and I dont know why because I havent degreased my engine in agessssss there was water in the gully of spark plug 5, cleaned that up hit it with compressed air abit of wd40 and cleaned and stretched the spring a little from the coil pack because it got a little corroded and squashed for some reason and its all good now, thanks for all your help guys, I really appreciate it, thanks.

Edited June 3, 2013 by MrRx7s3

[wolverine]

Well, yes it does. Splitfire has a aura of "YE BRO THEYRE THE BEST! BELIEVE IT!" when in reality, they failed hard for me. Splitfires may be good for your honda running 160fwkw but for me it could barely handle 260rwkw before breaking down.

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^^lol

Good story. Plenty of users here have made substantially more power reliably with them.

There is no doubt that all brands have some rate of failure. When this happens you return the faulty ones and ask for a replacement. Is there any reason you didn't return them for replacement?

The overwhelming experience here at SAU is that Splitfires are an OEM equivalent.

Splitfires were cheaper than OEM so most of us used them....even when we had to pay $1000 per set....or $2k for a PowerFC.....and don't ask about injector choices.

[JSF]

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^^lol

Good story. Plenty of users here have made substantially more power reliably with them.

There is no doubt that all brands have some rate of failure. When this happens you return the faulty ones and ask for a replacement. Is there any reason you didn't return them for replacement?

The overwhelming experience here at SAU is that Splitfires are an OEM equivalent.

Splitfires were cheaper than OEM so most of us used them....even when we had to pay $1000 per set....or $2k for a PowerFC.....and don't ask about injector choices.

Yeah called CJMOTOR and they told me it was my engine and if they replace it, same thing will happen. I tried reasoning with them, but no go. Purchased Nissan OEM ones for $380. Worked 100%. Even tried the splitfire's in my friend's 32 and same thing happened.

[wolverine]

It sucks if CJ Motor gave you the brush off on a faulty set.

Have checked each coil individually? It is possible there is a single faulty coil and you might be able to salvage the situation somewhat...

$380 for OEM coils is so much cheaper than the last set of Splitfires I bought. They cost me $850 when the AUD was much much lower.

CJ are Australian based so why not insist thru more official channels?

Edited June 3, 2013 by wolverine