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:
- Remove valve cover
- Replace gasket (BMW part number: 11127582245)
- Torque bolts to 10 Nm - Oil filter housing gasket:
- Remove oil filter housing
- Replace O-rings and gaskets (kit part number: 11421427782)
- Torque bolts to 22 Nm - Oil pan gasket:
- Support engine
- Remove front subframe
- Replace gasket (part number: 11137513050)
- Torque bolts to 12 Nm