@carguyvibez4life: Wondering if it’s old diesel fuel burning from when it spilled in the engine bay before not really sure though #M57 #335d #e90 #bmw #m57d30
Turbo lines, valve cover gasket, somewhere where boost is pushing it out for sure
2026-08-13 16:08:15
15
collinp :
probably a leaking valve cover gasket if it's smoking above the heads. when you do a pull and oil pressure goes it it leaks out more
2026-08-13 06:11:20
2
carterrdevan :
Dude those vaccum lines need to be replaced soon lmao
2026-09-28 16:35:03
1
altin :
bro where did you get the air filter from ?
2026-08-13 15:47:03
1
fran :
prob pcv
2026-08-13 11:45:47
2
Jr :
Valve cover gasket. They tend to break near the rear of the engine. I had the same problem I switched it out and it’s running great
2026-08-13 14:56:13
5
Fish :
It can be the exhaust manifold, downpipe gasket, or injector seals if the smoke smells like exhaust you can put a thin piece of paper on top of the injectors and see if it flies up but you would also hear a sound it looks closer to the pcv or valve cover though
2026-08-13 13:50:05
6
🤍 :
Diesel is compression based so it’s def not “burning”
2026-08-13 13:31:39
10
Christian K :
Dude I’m having the same issue, I’m not positive but it’s lower on the turbo for me. Maybe my oil return line? Idkkk man it’s pissing me off
2026-09-24 15:28:26
2
flacco760 :
Let it run and burn everything off if it’s been sitting for a while. My M57 had a diesel leak under the hood and it took a good few hours for it to burn off
2026-08-13 18:34:35
3
Akdps :
Check ur ccv hose and egr block off plate
2026-08-22 20:55:35
0
Badwagon 77 :
Check the turbo oil return line, rubber hose at the top may still look good. You need to feel the bend at the back, may be cracked or blown out. Easy fix. You can also check with a flashlight at nite to see where it's coming from if you're having issues finding the leak.
2026-08-13 20:02:52
3
cecil :
looks like a valve cover gasket to me
2026-08-13 15:38:05
2
Daz :
check rocker cover for leaks on exhaust side
2026-08-13 21:09:48
5
Robert Florin Rus :
Could be a plethora of things tbh.
2026-08-13 14:57:15
3
merbearlove6 :
Valve cover…the seals dry out and crack. It’s a full day job so buckle up. Don’t go cheap either or you will be back in there.
2026-08-13 22:41:06
2
W211Vlad🇷🇴 :
Just wondering if it could be the injector ring/ those washers at the end of the injector
2026-08-13 05:26:55
3
shelly and frans :
pcv hose.
2026-08-13 14:22:50
2
F🅰️KE M3 :
It is the oil cap. Had same problem on mine
2026-08-13 20:34:41
1
Andrei B6 :
check the valve cover gasket or if the valve cover is tightened enough, and if these are ok change the oil cap.
2026-08-13 22:11:29
1
Keegan :
clean the engine than start it and look for leaks 😛
2026-08-13 20:56:47
1
black.benzooo :
diesel fuel isnt volatile as a liquid, only when its atomized is it flammable and combustible. you either have a pcv issue or your valve cover is leaking/cracked
2026-08-13 11:48:44
1
bookofchangess :
Wait til it goes on fire lol
2026-08-13 16:56:28
0
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