[DG330]

Originally Posted by rasa bmw

yeh,,disconnect the maf sensor,,then drive it,,if it drives fine then the maf is at fault,,the car will relearn original settings when its disconnected.

What do you mean by original settings? the car is remapped and part stage 2 I believe, all done before I owned it. I will take it for a spin with the part off.

Would a fuel filter cause light blue/white/light grey smoke?

[rasa bmw]

probably not,,oil maybe getting into the intake system via the ccv venting oil ..the system on these cars is not all that good,,the breather filter/hose and connections is poor,,it leads to vented oil getting into the boost hoses/intercooler/turbo,my red boost hose is leaking on my 335d,,its had an aftermarket one by last owner but oits leaking again..gonna see if ican sort it as soon as i can,think irts leaking past the seals,,but maybe gonna change ccv filetr and connecting hose etc

[DG330]

Originally Posted by rasa bmw

probably not,,oil maybe getting into the intake system via the ccv venting oil ..the system on these cars is not all that good,,the breather filter/hose and connections is poor,,it leads to vented oil getting into the boost hoses/intercooler/turbo,my red boost hose is leaking on my 335d,,its had an aftermarket one by last owner but oits leaking again..gonna see if ican sort it as soon as i can,think irts leaking past the seals,,but maybe gonna change ccv filetr and connecting hose etc

Changed the breather already, glow plugs, relay, thermostat, checked intercooler and all fine. Only fault left on INPA is fuel filter, once that is done could be stem seals or turbo I guess. Unless it’s the remap, like this thread

[rasa bmw]

my 330d throws a fuel filter fault but runs fine.infact greative read some fuel filters do that

[naglaslietuvis]

fine with my e90. not lucky you

[DG330]

Originally Posted by rasa bmw

my 330d throws a fuel filter fault but runs fine.infact greative read some fuel filters do that

Changed the fuel filter and cleared the code. Still smoking, but it’s white

[rasa bmw]

white smoke would indicate coolant,,have your egr cooler checked,,they can crack and flood the car with coolant,and very worst case wreck it and new engine time

[rasa bmw]

also you need to find out who mapped the car,,,or try and get it to jason at bwchiptune so he can read the map and see if its that,,but even if it aint the map,,then he will know whats wrong with the car

[Chappers 71]

Originally Posted by Txs330D

Changed the fuel filter and cleared the code. Still smoking, but it’s white

Are u sure it's white smoke & not just water vapour? I dont know about the oil burners but petrols can give off great plumes of white 'smoke' especially now the weather's a bit colder.

[rasa bmw]

Originally Posted by Chappers 71

Are u sure it's white smoke & not just water vapour? I dont know about the oil burners but petrols can give off great plumes of white 'smoke' especially now the weather's a bit colder.

yrh the dervs dont really accumilate much condensation,,,ive had petrol cars ie focus st k2 and as you say early on colder mornings it looks worse than really is,,but id deffo check the egr cooler,,few cases of it going,,i even bought a delete kit biut jason from bwchiptune said not to bother

[IdkWhatToPutAsMyName-drei]

I have a 2011 335d, I got it about a month ago. the previous owner has done all the modifications, such as an emissions delete (egr, def, scr, dpf all gone) swirl flaps gone, has twin turbos and a downpipe, asked I'm the stage and he said 1.5??? ive changed the oil and added seafoam when I got it. things were running well until last week my car started giving out wayy more smoke than it normally would when him idling (it shouldn't at all right?) and now coming out white/gray. can someone please help me navigate the cause and how to fix this? idk how serious this can be. (seriously it looks like there's a fire back there)