Got Splitfires, And 1.0mm Gap=missfire (update) 0.8mm

[WogsRus]

B U M P

[R31Nismoid]

check all your connectors from the coilpack out.

one could be dirty or corroded.

Maybe the CAS... but unlikely with your symptom... best case is to try someone elses CAS if you can...

erm... what else. Usual other stuff, clean AFM, new fuel filter

anything that might upset the fuel or spark is what you wanna chase

[WogsRus]

Fuel filter is near new, yeah gona check all the conections and so forth. Also might spray some WD40 on all conectors, it helps.

[WogsRus]

FORGOT TO ASK< what plugs SHOULD i be using. I am using the BKR6EYA, is that OK??????

[R31Nismoid]

You can do the reading

http://www.skylinesaustralia.com/forums/in...howtopic=104405

I just know where the threads are

[Trex101]

B U M P

You could run a bottle of SI-1, the injector cleaner might clean up dirty injector thus improve the spray pattern.

[Cubes]

Plugs you say.

BCPR6E

They are a NGK V-groove 0.8mm gapped plug.

Thats the exact part number, don't go adding bits to it or changing it. They can be had from Motor traders/Coventrys for as little as $2.80 per plug. Buy else where and they might not have them and if they do you will be looking at $4.80 or something per plug.

Under full load/WOT... Have you checked your voltages? Maybe your Alt is on her merry way?

Has the motor been out of the car? Check all earths. Battery to chassis, battery to chassis to motor, all the little earth straps from the chassis to exhaust manifold, inlet manifold and head. Lots of little buggers around. Well there is on mine.

[VLT025]

Could this just be an R&R problem? Seems probable to me. My freaks out on 9-10 PSI

[Cubes]

R&R doesn't miss/pop.

[WogsRus]

OK So first thing

I read last night teh plug thing, and i was wondering what the differance is betweens i am running and the BCPR6E, i have also heard of BCPR6ES. I know NGK use to have a plug referance that told you what all the letter stood for, anyone have one? According to the NGK website the BKR6EYA are a direct replacemtn for iridiums that the car is suppose to have.???????

So i will try some of these plugs and see how it goes?

Injectors and clean, as best as i can tell, i checked all of trhem, flow almost all thesame, but i might try some good injector clener, what do you recomend?

I will do a log of the Voltages on teh way home, but as far as i know the alternator is ok, it never runs flat, voltage is 14.2 running, new battery, all seams ok, but will check it, Thanks.

The motor has not been out of the car, but i am not sure if all the earth are connected, as i don't know wher they all should be, will do some research.

In regards to R&R, no issues there, i can pull 13 psi before anythign flattens out, it's like a revlimmiter, not a cut out as such.

Going to do some more researching today.

Was told that a faulty CAS will do this aswell, can somone confirm and tell me what to look out for?

Do the R33 need a different spark plug????

DAM IT???

Funny thing is the problme was not there when car was STOCk it gradualy got worse the more mods i put onto the car. HUMMM...

[Kennedy]

May sound silly but are you sure you dont have a washer or something in the coilpack bay? I only ask coz thats what happened to me. After months of gapping and silicon, all it was, was a 2mm washer hiding in the well of cylinder 3

[WogsRus]

Will check it out, but i don't think there is anythign in there to ark out agains. What can i do to see if it is not an injector fault as per this post

http://www.skylinesaustralia.com/forums/in...=129897&hl=

Also is there anyway i can tell if it is just an individual coil doing it.

The thing is if it is an injector or something, would gapping the plugs down fix this?

[Cubes]

OK So first thing

I read last night teh plug thing, and i was wondering what the differance is betweens i am running and the BCPR6E, i have also heard of BCPR6ES.

According to the NGK website the BKR6EYA are a direct replacemtn for iridiums that the car is suppose to have.???????

Do the R33 need a different spark plug????

The BK plugs are essentially the same as the BC plugs just a touch shorter.

[WogsRus]

so what are all the EYA things for, i know 6 is heat range and so forth, but the rest. DO you think it is benificial to get the BCPR6E or stick with mine and go down to 0.7mm gap

How can i gignose a faulty CAS?

How do i dignose if an injector is faulty?

Other then that, the car is sooo much better, pulls nice, smooth idle, me like.

[heller44]

ngk code breakdown.

http://www.spark-plugs.co.uk/pages/technical/ngkjpg.htm

[WogsRus]

thanks budy, much appriciated.

I have gone through the maintnace manual and am going to perform all the test to see what i come up with, susspition is down to CAS or injector, or bad earth. LOL, there is a lot of OR's

[Cubes]

so what are all the EYA things for, i know 6 is heat range and so forth, but the rest. DO you think it is benificial to get the BCPR6E or stick with mine and go down to 0.7mm gap

How can i gignose a faulty CAS?

How do i dignose if an injector is faulty?

Other then that, the car is sooo much better, pulls nice, smooth idle, me like.

Maybe you have a hairline crack in the ceramic of one of the plugs?

I done this once when I used a swivel to replace the plug under the cross over pipe. I had the plugs in and out 3-4 times and only saw the crack on the last. Drove me insane trying to track down the slight miss around 5500rpm that would then clear up and pull well to 7000rpm.

So check them all very carefully.

Gap to 0.8mm and then try to get to the bottom of what the 'real' cause of your misfire is.

The boost levels your running you should be able to run a 0.8 gap.

[Link]

I bet its plugs

Grab a fresh set and whack them in

[WogsRus]

well yeah never hurts to get new plugs. I have them gapped to 0.8mm now, and allthough MUCH better, missfire not all gone, so gona try anything sugested.

[Kennedy]

How can i diagnose a faulty CAS?

Consult might be able to do it. There is an error code in the ECU which says something about CAS