So cylinder 3 and 6 have had a new injector,plug and coilpack and the new injectors coded. (all had new NGK plugs)
3 and 6 are still misfiring on start up. This is reading the cylinder smoothness values on a proper machine. Both Cylinder 3 and 6 go into the + values (up to +6.xxx) which is when the car gets a big missfire.
I have 4 more new injectors here but this has put a bigger spanner in the works with 3 and 6 still acting up, so i am not wanting to put the other 4 in now incase the problem still persists meaning ive chucked money at it for bugger all.
Anyone got any ideas? Maybe electrical? Someone mentioned a BMW update as the ECU controls the start up procedure.
The internet is literally littered in threads about the same symptoms as mine. After the car sitting for 8+ hours and then starting it the car will vibrate for 2 min with a loss of power if driven, then after that 2 minutes the car runs 100% perfect, not even the slightest of misfires. Leaky injectors would make perfect sense and the solution to most of these problems is new injectors. Just doesn't make sense that my 3 and 6 are still the only ones misfiring on a cold start even if i haven't replaced 1,2,4 and 5 aswell.
Fancied seeing if anyone on here has any ideas before i book it into BMW. Which i reckon will just say plugs/coils/injectors.
Stormster, you know when i said i haven't had any Big bills yet, well thats gunna change lol, ****in thing.