For some time I've had bit of an issue, car would misfire/hesitate when booted from cold. Well "don't do it idiot" so I wasn't. It wouldn't play up If warmed up just for 5 min or driven for around mile bit like anti-rag. Unfortunately last week fault began to be worst, it would still misfire after 5 miles (soonest I'd hit any boost it sounded like anti-lag/launch control) and last Sunday bloody thing just stopped.
It wouldn't start eventually if it started would cut out if I'd press gas pedal. Sometimes when trying to start it would back fire in to intake and sort of run backwards for few sec.
So I've tried swapping for known working:
Fuel pump and relay
Fuel pressure regulator
New ht leads dizzy cap rotor arm and plugs
Known working distributor (I've thought that hall sensor gave up)
New ignition coil
Pressurized intake - no leaks
Can't check fuel pressure but took off hose from filter and turn ignition on and pump is priming and when turning over there is constant pressure
Well there is spark to but I've replaced plugs and car wouldn't start straight away I've pulled no1 plug and it was flooded.
When turning over and won't start car stinks of petrol and since is flooding like that I'm thinking that whatever is controlling injectors is keeping them open for too long. Oh and it's running around 12 afr on idle
I haven't checked compression yet but occasionally car starts but soonest there is even 0.1 bar of boost it just start misfiring again
There was code no 12 but I've disconnected maf while running cleared dtc and it stayed clear for time being
By the way car is pretty much standard except gt2871r running 1 bar with gizzmo ebc only mod to the loom is to tach signal which I've added cable to ebc.
My next step is to check wiring to maf and poss coolant temp sensor.
If any of you guys came across something like that and could point me in some direction it would be lovely as I need my beasty to get me to work...
Once I'll figure out how I'll put vid of it running...
Last edited by Gostek on 23rd February 2017, 11:25 pm; edited 1 time in total