All Things MK6 R and GTI > MK6 General Area
Misfire when cold
gttdigoof:
Bugger, turns out the problematic injector is fooked, was only at 60%. He was surprised it was only showing on idle
gttdigoof:
So this is the cause of my problems, these are filters from inside the injectors, took them to Mr Injector, whos 20 minutes from my house, he stripped, cleaned and serviced 3 of them but no1 that was causing my misfire was beyond repair and only working at 60%, new one ordered from TPS, hopefully this will fix it and it should feel better to drive
Apparently this is caused by the ethanol in the fuel and made worse by running additives and cleaners through them
AJP:
My k03 GTI is quite rough on a cold start. And like yours, idles nicely once it's warmed up.
I'll be keeping an eye on your update.
I'm also getting misfires/fuel cuts, or both, under load, but I think this might be the standard fuel pump struggling (only started with the problems under load after I got the map revised from Stage 1 to Stage 2) so this could be unrelated to the bad cold starts in my case.
Fingers crossed the new injector sorts it for you anyway.
doylebros:
--- Quote from: gttdigoof on July 12, 2016, 05:51:44 pm ---So this is the cause of my problems, these are filters from inside the injectors, took them to Mr Injector, whos 20 minutes from my house, he stripped, cleaned and serviced 3 of them but no1 that was causing my misfire was beyond repair and only working at 60%, new one ordered from TPS, hopefully this will fix it and it should feel better to drive
Apparently this is caused by the ethanol in the fuel and made worse by running additives and cleaners through them
--- End quote ---
Interesting so is it a new injector or a new filter incert you've ordered and what engine code is your vehicle as those filter incerts are puzzling me.
gttdigoof:
--- Quote from: doylebros on July 12, 2016, 08:02:06 pm ---
Interesting so is it a new injector or a new filter incert you've ordered and what engine code is your vehicle as those filter incerts are puzzling me.
--- End quote ---
As part of the service, 3 of the injectors had new filters fitted with new seals and cleaned out, flow and spray pattern checked.
I have ordered a complete new injector to replace the one that was beyond repair.
Engine code is CDLF
Injector part number 0 261 500 037 (Bosch PN I think)
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