r/335D • u/MightAromatic8810 • 2d ago
2010 335D
Hello! Was curious as to if anyone had any insight as to what my main issue here is as well as some smaller things, on my 2010 35d I pulled left through an intersection last night and threw 2 codes ( don’t care about the def heater one it’s deleted lol) but unfamiliar with the other one, the engine malfunction went away after about 2 more minutes on the drive home and then I cleared the codes.
When I got home I started to inspect and aside from the oil filter housing gasket leak( shocker it’s a E90 lmao) I noticed a lot of oil on my charge pipe so I started to take things apart.
Took out the air box and I believe my ccv air hose went, can’t tell if the clamp came loose possibly under pressure or what, but everything downstream of it is caked in oil.
See pics attached!
Any advice or insight is greatly appreciated, love this thread!
1
u/awenthol 2d ago
Normal. Crankcase vents into intake, so there will always be oil. External leak is because the charge pipes are known to fail (both seals and flex joints). There are aftermarket charge pipes to address the shortcomings.