[BeastMode335i]

Last week I brought my car to BMW because all of a sudden it started smoking like a train on my way home from work, the smoke was a whitish/gray.. The next day they called me and told me that everything checks out fine except my fuel injectors need to be replaced and that they're the culprit behind all this smoking.. So after searching around for how to double check their theory of "raw burnt fuel" causing this, I began to research "faulty injectors" and I found a few write-ups and this video that I posted below.. So I did this test to see if injectors were leaking, but none leaked..?? So now I'm kind of stumped because if I had a leaky or faulty injector I imagined it would spew out fuel like these videos show..

Is there anything else I can do to determine if my injectors are in fact my issue, and maybe even how to pinpoint which ones are causing my car to smoke like crazy..?? As soon as I turn it on it just starts smoking horribly...

[/QUOTE]

Any help would be greatly appreciated, as I've been without my car for two weeks now and I'd like to avoid paying another shop $150 bucks to tell me what "may" be wrong with my car..

Thanks!

EDIT: Since my injectors weren't the issue I've listed them For Sale in the Florida section..

[TrAcK TRaP]

if most of your plugs smelled fuel really bad when you replaced them I would say replace all your injectors

[BeastMode335i]

Originally Posted by N54CherryHill

if most of your plugs smelled fuel really bad when you replaced them I would say replace all your injectors

It was weird, because plug 1, 3, and 5 were the fuel smelling ones.. 2, 4, and 6 were typical dry/brownish... Kind of odd for them to be odd numbers only, don't these get placed in a "bank" sequence..??

[TrAcK TRaP]

you can get away by replacing 3 but I would do all just don't do it with dealer they are rip off. I am sure you can find someone to code them for you..

[BeastMode335i]

Originally Posted by N54CherryHill

you can get away by replacing 3 but I would do all just don't do it with dealer they are rip off. I am sure you can find someone to code them for you..

I have a K+DCAN cable and INPA so I'm comfortable with coding them, looks easy enough.. I already have 3 injectors so should I replace 1, 3, and 5 injectors since those were the ones drenched with gas..??

Also, with the coil still connected to the plug, is there anyway that fuel could have leaked down the injector and gotten into the spark plugs cylinder somehow..?? I'm just tryna figure out if fuel leaked in there somehow during my test, or if the injectors are the culprit..?? I hadn't started my car in about a week and those 3 plugs were pretty wet with fuel..

[TrAcK TRaP]

ohh I didn't know you had a K+DCAN cable and inpa and if you are friendly with coding I would replace the 1-3-5 only since you have 3 injectors on hand already and they were the bad ones leave the 2-4-6 alone for now and see what happens. I am sure it will fix your issue.. Good luck and let us know..

[BeastMode335i]

Originally Posted by N54CherryHill

ohh I didn't know you had a K+DCAN cable and inpa and if you are friendly with coding I would replace the 1-3-5 only since you have 3 injectors on hand already and they were the bad ones leave the 2-4-6 alone for now and see what happens. I am sure it will fix your issue.. Good luck and let us know..

Yes sir, I borrowed a friends and I have my own but mine is a bit picky on when it wants to work (crappy chinese one)..

But yeah I imagine I'll swap out those 3 injectors tomorrow after work and go from there.. I'm just trying to figure out if fuel could have gotten in there anyhow during my test tonight, or if those 3 plugs have been sitting in fuel for a week now... Would a fuel injector be able to get fuel inside the spark plug cylinder somehow..???

Thanks!

[TrAcK TRaP]

you are replacing your spark plugs along with the injectors correct? if yes I don't see any problem..

[BeastMode335i]

Originally Posted by N54CherryHill

you are replacing your spark plugs along with the injectors correct? if yes I don't see any problem..

Well first I did that test that is in the video in my OP, and before that I hadn't replaced anything.. Then I figured since I had the new spark plugs on hand I would just take out the old ones and throw in the new ones.. Well, when I took out the old ones, #1, #3, and #5 appeared to be dipped in fuel..! And I was trying to figure out if maybe when I was removing the injectors from the fuel lines if somehow or another fuel got onto the spark plug, but I just can't see how that would happen since when I performed the injector test, the plugs still had the coils snapped on them, so I just assumed that those plugs had been bathing in fuel all week and that the fuel was already on them prior to me doing any testing.. I've built many engines and have had some crazy things happen in the 16 years I've been driving, but I just never had a car foul out multiple injectors all at the same time.. And on top of that, I've never had a car smoke like a damn train out of no where, all because of injectors either.. I imagine I'm not the only one who's experienced this but it seems that most others who experience injector issues don't get the accompanying huge clouds of smoke like I'm experiencing..

I thought maybe there was an underlying issue and it perhaps wasn't my injectors after all, but even when I just turn my car to the "acc" position right before it's about to turn on, I can start to smell fuel while sitting in the drivers seat... I thought white smoke would be head gasket, but 1. i'm not losing any coolant, and 2. BMW said they checked and it's definitely injector related.. I'm just unsure of how trustworthy they are during their diagnosis..

[TrAcK TRaP]

well first don't forget that we are driving N54 sorry to say that but these cars are weird and full of problems. I am almost positive that your problem is injectors. Imagine I drove my car with ABS BRAKE lights on included DSC for a year and problem was fucking battery like really? Low battery is like virus on this car and learned it can cause anything I know its off topic but just trying to explain shitty problems with this car. I am already tired and planing to trade this piece of shit. Just replace your injectors (1-3-5) along with spark plugs and you'll be fine. Reason I tell you this because you are handy with install and coding and have nothing to loose if you were paying to dealer for all those work I would've shut my mouth because it could be something else. Bad turbos can cause smoking without loosing any coolant also.

[BeastMode335i]

Yeah I've been made aware that these cars are beyond problematic! I'm gonna swap the injectors after work and go from there.. I was thinking of swapping the #2 injector to bank 2, and just putting my new injectors in cyl 1, 2, and 3 so I'd have all -12 index in bank one and all -5 index in bank two..

[ferocity02]

How did the injectors look? Were the tips sooty? If you look at the leaking injector in that video, the tip is a deep black color, the others not so much.

The only thing I don't know about that video is whether or not the rail pressure during cranking is enough to get the injectors to leak. Perhaps the injector in that video was really bad so it worked for them.

Also, I don't see how bad injectors would cause that much smoke unless its DUMPING fuel, but then it wouldn't even run.

Here is my thread about my injectors, you can see that #6 was leaking but the others appeared fine. I replaced all of them though since they all had 85K miles on them.

[BeastMode335i]

Originally Posted by ferocity02

How did the injectors look? Were the tips sooty? If you look at the leaking injector in that video, the tip is a deep black color, the others not so much.

The only thing I don't know about that video is whether or not the rail pressure during cranking is enough to get the injectors to leak. Perhaps the injector in that video was really bad so it worked for them.

Also, I don't see how bad injectors would cause that much smoke unless its DUMPING fuel, but then it wouldn't even run.

Here is my thread about my injectors, you can see that #6 was leaking but the others appeared fine. I replaced all of them though since they all had 85K miles on them.

TBH, some of them looked like crap on the tips.. Almost oxidized and kind of rusty looking.. I'm going to replace the 3 shitty ones with my new ones and see if that changes anything.. I know I need a walnut blast but before I do anything else, I want to fix this smoking problem.. They replaced the CCV at BMW, I wonder if that's the same as the PCV..??

[techwhiz]

Get the an OBDII adapter and software. You can monitor HPFP pressure in real time.
If injector 135 are bad then you will need to move all the bad ones to a single bank.
You cannot mix old injectors (depending on number) with the newest injectors in the same bank.

[BeastMode335i]

Originally Posted by techwhiz

Get the an OBDII adapter and software. You can monitor HPFP pressure in real time.
If injector 135 are bad then you will need to move all the bad ones to a single bank.
You cannot mix old injectors (depending on number) with the newest injectors in the same bank.

I asked that question in a different thread about the OBD2 adapter.. I have a k+dcan cable but it's very picky on when it wants to work correctly..

Does the BMWhat cable work with INPA?? And yes I'm aware about the mixing of injectors in the same bank..

Thanks for ur input..!

[BeastMode335i]

So I did as I mentioned I would and put the new injectors in the first three cylinders.. My car still smokes but not nearly as bad.. The weird part is that it doesn't smell like fuel, it smells like oil/hydrocarbons but it's a white/grey smoke.. I'm not losing any coolant but I have been burning through oil lately.. Hmmm, I hope I didn't get hit with a plethora of issues all at once..

[BeastMode335i]

Is there any chance that enough fuel leaked into my oil that I'll constantly have this smoke issue until I change the oil and filter..?? I'm going to order the other 3 injectors this week so I'm thinking it may be a waste of money to change the oil before then to test my theory but any feedback is appreciated..

[ferocity02]

As I mentioned in my previous post, its incredibly unlikely that excess fuel would cause smoke. Sounds more like bad turbo oil seals to me.

[924er]

Originally Posted by BeastMode335i

Is there any chance that enough fuel leaked into my oil that I'll constantly have this smoke issue until I change the oil and filter..?? I'm going to order the other 3 injectors this week so I'm thinking it may be a waste of money to change the oil before then to test my theory but any feedback is appreciated..

It's never a waste of money to change oil

[BeastMode335i]

Touche my friend..

[BeastMode335i]

I'm gonna change oil in the AM but if anyone's had smoking issues and it been because of fuel/oil mixing I'd love to hear your thoughts or solutions..

Thanks!

[BeastMode335i]

Here's a video before replacing 3 of the injectors.. Still smoking but not as bad, I'm still shocked that this is supposedly fuel related..!

https://www.dropbox.com/s/604phdk9oq...94624.mp4?dl=0