Misfire

[Speedy0o]

Right hey all.... I was driving over to cheltenham earlier going "quite" fast lol... and after slowing to a halt and going to pull off again i noticed the car misfiring slightly and then going back to normal. It seemed like it was only doing it on boost to start off with... After a little while of going careful it gradually got worse! It now misses all the time!
There is/was no smoke which says its not something detrimental! There wasnt any abnormal noises that i could hear but i did have the music loud :rolleyes: I just wanna get it sorted cos its missing its tits off!!!! Im hoping maybe a coil pack has given up?

I was wondering if maybe anyone has a spare working coil pack that i could try out? I had alook under the bonnet but couldnt see anything obvious! So im thinkin either spark or fuel!
Could meet up at some point but obviously its not doing it n e good runing round with a
misfire!!!

Any help much0s apreciated!!!

[disco-tom]

I have a spare AFM and a set of spare coil packs if you want to try them and rule a couple of things out mate.

[Speedy0o]

I have a spare AFM and a set of spare coil packs if you want to try them and rule a couple of things out mate.

Yea that would be great! Could meet you somewhere 2moro ?

[disco-tom]

Sure thing. I'm working 'til 4pm tomorrow at Arjo next door to Kingsholm Rugby ground. You live down longford, yeah? I can pop round after work if you want?

[Speedy0o]

I live in longlevens which isnt far from longford. I gotta make a "slow" journey to worcester 2moro noon to get my gearbox sorted... but i should be free after that! Ill PM u my address

[disco-tom]

Aye, cool then.

[FullMetalGasket]

Could also be Sparkplugs :thumbs:
I killed mine on a trackday - the car ran fine until you started to put it under load, then it would miss occaisionally :)

[Speedy0o]

Could also be Sparkplugs :thumbs:
I killed mine on a trackday - the car ran fine until you started to put it under load, then it would miss occaisionally :)

yea i originally thought that.. but unles 1 is completey knackered i would go more with a coil pack as it does it all the time everytime! sounds like a scooby:rolleyes: lol but goes like a lada!

[cardiff scum]

yea i originally thought that.. but unles 1 is completey knackered i would go more with a coil pack as it does it all the time everytime! sounds like a scooby:rolleyes: lol but goes like a lada!

coilpack.just had exactly the same problem with mine.Pull the rubber ends off and check the condition of the springs and the contact patch.

[disco-tom]

It was number one spark plug after, drew. I asked him to check before we stuck in my spare set of coils and found the electrode and the other bit that the spark jumps to/from had obliterated themselves. Good thing the ceramic was still in one piece.

[cardiff scum]

seems to be happening quite a lot lately,lets hope the bits havent done any damage:nod:

[disco-tom]

IK22's with 13psi of boost on a standard T28. Maybe that is what did it? He's got a set of 24's in now. Speedy0o, have a check of the plugs I gave you one day and see if there's been any damage to them.

[Speedy0o]

Wel just an update to this thread... Comin back from notts last week.. thought id try giving it some beans... yet again after a prolonged period of hard driving..... buuuuuuur burbububur oh dear.. another misfire... but was ok off boost... but had to drive it like it for 25miles, it was ok as long as i didnt get the tiniest hint of boost and i mean none.. had to keep my foot perfectly still on the pedal to stop it missing..

Got to work the next day whipped the number 1 plug out 1st.. oh and what a surprise...
melted!!!!!!!!
Checked the rest... a few were a tiny bit white im assuming with extreme heat... but ok
So shes got a brand new set of denso IK24's now.... and im running it on 99ron super AND octane booster to help cut out the pinking untill i can raise the cash to go get H-Dev to map my ECU for me!:nod:

I've also swapped number 1 and number 2 coil packs around... just in case.. but i think for now its just a case of lay off the go faster pedal for a while!!! :annoyed:

[Speedy0o]

Oh and thanks for your help tom... i thought i put in a post saying thanks to u.. but i couldnt find it again so must not of saved it :rolleyes:
Just hope i can get it sorted!n that its nothing too serious! :no:

[disco-tom]

Bugger. Something can't be right if it's killing plugs.. I know they weren't new, but I didn't have any missfires when I ran them.

Could you get a compression test done and see what that says?

[jibber]

and check your timing

[Speedy0o]

It only did it top speed tho its fine just driving around normal! For the min ive got a light right foot a tank full of 99ron and octane booster to help stop the pinking! Its doing ok at the min... Im thinking maybe igntion timing could be out a smidge?!? I mean if its firing a tad to late it wont do it much good!