[Atroci0us]

hey guys I have ran into a problem and looking for some help from all you experts out there

this morning i started the car, it was a very rough start and the car was shaking a lot. it also had dark grey almost black smoke coming out from the exhaust and a very strong gasoline smell. the exhaust pipes also had a grey sluggish liquid coming out and dripping. with the rough idles, i noticed the rpms going up and down and also i can hear a loud fan (prob the radiator fan going max speed). the ses light blinks and also half engine light came on too.

i turned off the car and did some research and many pointed the problem to leaky fuel injector. ppl said to just drive it for a bit and burn off the excess fuel in the chamber and it will be normal for a while.

while driving around there is still a lot of smoke and a strong gasoline smell with a very loud engine (sounds like a tractor) and weak engine powers with ses light on). while driving did some code reading from my JB4 and got

29D1 misfiring, cylinder 5 multiple times

but during one of those reads i got:
29D1 misfiring, cylinder 5
29D2 misfiring, cylinder 6
29D0 misfiring, cylinder 4
29CC misfiring, several cylinder

after driving for 10 mins, things got smooth, i restarted the car and got full powers back. no more ses light and no more codes

car background
2007 335i E92 N54 currently 105k KM, (modded at 98k KM) JB4 map 1, DCI, Downpipe
in 2011 55k KM, had HPFP replaced under recall, scanned 6 injectors and replaced 3(1,3,5) under recall, spark plug replaced
in 2012 65k KM replaced thermostat

i know the spark plugs are due, and i have a set on the way. but to me it seems like whats causing the problem is a leaking fuel injector. is that right? and i read that you cant have mix old and new updated version of the injectors? and you have to replace 3 or all 6 at a time?

any help is greatly appreciated
thanks

[The1ontop]

Start with the plugs then move from there to coils then injectors lastly cause it will cost the most of them all but my money is on injectors and probably plugs

[David1]

Injectors

[Atroci0us]

thats weird,cuz when i started the car today everything was fine.
if it was a leaky injector wouldnt that happen every time?

[335e92]

Injectors +1

Had the same problem last week.
You need to get 3 injectors bank 2 at a time according to BMW. One misfires and causes other ones to misfire.

Replaced all 6 injectors and spark plugs under warranty.

Good luck!

[335e92]

One more thing the oil is getting washed out by fuel, smell the oil? See if you might need an oil change before you drive it too much. Things can get ruined quickly.

[ToastOfTenacity]

Leaky injectors