Mysterious burnt oil smell
03-06-2018, 10:32 PM
#1
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Location: Vietnam
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My Ride: 2006 525i
Model Year: 206
Mysterious burnt oil smell
I am driving an 06 525i with N52B25 engine and has been struggling with this burnt oil smell in the cabin for the past 18 months.
The car used to have severe oil leak when I bought 2 years ago and I have done all the major maintenance/replacement to fix the oil leak including
- New valve cover gasket
- New oil pan gasket
- oil cooler gasket
- CCV and all hoses attached to it
- vanos solenoid and O-ring
- Valve stem seal
and alot other gaskets I could see on realoem.
The oil leak reduced significantly but I do have oil leak somewhere (couldnt see by the eyes/ engine pretty dry now). Especially whenever I go hard on the accelerator, there immediately a burnt oil smell in the cabin and if I continued to go hard then the oil level on idrive shows a small reduction.
Any advise where to tackle this since I almost give up on this oil leak thing. Thanks
The car used to have severe oil leak when I bought 2 years ago and I have done all the major maintenance/replacement to fix the oil leak including
- New valve cover gasket
- New oil pan gasket
- oil cooler gasket
- CCV and all hoses attached to it
- vanos solenoid and O-ring
- Valve stem seal
and alot other gaskets I could see on realoem.
The oil leak reduced significantly but I do have oil leak somewhere (couldnt see by the eyes/ engine pretty dry now). Especially whenever I go hard on the accelerator, there immediately a burnt oil smell in the cabin and if I continued to go hard then the oil level on idrive shows a small reduction.
Any advise where to tackle this since I almost give up on this oil leak thing. Thanks
03-07-2018, 05:28 PM
#2
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My Ride: 530xi 6sp
Model Year: 2006
from the recent research i did, could be broken alu vc bolts or oil filter housing gasket (if you have yet to do that). trying to figure out my nasty cabin smell as well.
03-10-2018, 01:12 AM
#3
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My Ride: 2006 525i
Model Year: 206
I replaced the oil filter housing gasket already . Then it me check on the valve cover bolt. These are such a PITA
03-10-2018, 05:43 AM
#4
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My Ride: 530i
Model Year: 2004
Engine: M54
I am driving an 06 525i with N52B25 engine and has been struggling with this burnt oil smell in the cabin for the past 18 months.
The car used to have severe oil leak when I bought 2 years ago and I have done all the major maintenance/replacement to fix the oil leak including
- New valve cover gasket
- New oil pan gasket
- oil cooler gasket
- CCV and all hoses attached to it
- vanos solenoid and O-ring
- Valve stem seal
and alot other gaskets I could see on realoem.
The oil leak reduced significantly but I do have oil leak somewhere (couldnt see by the eyes/ engine pretty dry now). Especially whenever I go hard on the accelerator, there immediately a burnt oil smell in the cabin and if I continued to go hard then the oil level on idrive shows a small reduction.
Any advise where to tackle this since I almost give up on this oil leak thing. Thanks
The car used to have severe oil leak when I bought 2 years ago and I have done all the major maintenance/replacement to fix the oil leak including
- New valve cover gasket
- New oil pan gasket
- oil cooler gasket
- CCV and all hoses attached to it
- vanos solenoid and O-ring
- Valve stem seal
and alot other gaskets I could see on realoem.
The oil leak reduced significantly but I do have oil leak somewhere (couldnt see by the eyes/ engine pretty dry now). Especially whenever I go hard on the accelerator, there immediately a burnt oil smell in the cabin and if I continued to go hard then the oil level on idrive shows a small reduction.
Any advise where to tackle this since I almost give up on this oil leak thing. Thanks
03-14-2018, 05:38 PM
#5
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My Ride: 2006 525i
Model Year: 206
Do you have the part number for main seals?
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