BMW E46 330i (M54B30) engine oil leak - causes and solutions
Posted: Tue Oct 01, 2024 11:41 am
BMW E46 330i (M54B30) engine oil leak - causes and solutions
Common leak sources:
Common leak sources:
- Valve cover gasket
- Oil filter housing gasket
- Oil pan gasket
- Rear main seal
- VANOS seals
- Clean the engine thoroughly
- Run the engine and inspect for fresh oil leaks
- Use UV dye for hard-to-spot leaks
- Valve cover gasket replacement:
- Remove valve cover and replace gasket
- Torque bolts to 10 Nm - Oil filter housing gasket replacement:
- Remove oil filter housing and replace O-rings and gaskets
- Torque bolts to 22 Nm - Oil pan gasket replacement:
- Support engine, remove front subframe
- Replace gasket and torque bolts to 12 Nm