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i have just picked up an r32 4 door gtst on friday from japan 74k

when its cold it runs perfect but as soon as it warms up it misses

ive checked connections,checked no1 coil it was cracked through resin

replaced it, no2,3 haven't checked as yet, no3,4,5 looked new

still missing,plugs look new(could be damaged tho-install)

i did wash engine bay,dirty as, but not sure if problem already existed!

any thoughts

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The fact it misses when warm suggests a problem with the igniter pack - they are known for breaking down under heat.

The water probably didn't help, either, but I'd expect that the warmth of the engine would eventually dry it out.

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Hey mate,

I just had this had this problem, coil pack to cylinder No. 2 was suffering from thermal breakdown.

Here's the 2 ways to determine the cylinder.

1 - If the valley cover is on:

While ideling disconnect each injector one at a time until you find one that doesn't change the exhaust note (3 & 4 can be tricky, but doable) but like magic you have found you problem cylinder. This would indicate that this coil is dying or dead, but could also mean a fuel problem etc. To confirm coil swap the suspect coil with one you know works and see if the probem follows the coil.

If faulty procede to remove and smash with a hammer and replace.

2 - The valley cover is on

While ideling simply disconnect each coil one at a time until a suspect coil is found; no change in the exhaust note is heard when disconnected. Swap with a known working one and as above see if the problem follows the coil. If it does once again if faulty procede to remove and smash with a hammer and replace, else look for another source of the problem.

Hope something there helps,

Sully

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hey guys

i fitted another igniter at work this morning......still missing!!!!

by this time i still had no5 coil which hadn't been changed usual story..last one!!

so i fitted a another coil to it and bingo....happy days

thanks guys

got there in the end

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