jshodgson
Senior Member
- Joined
- Aug 26, 2017
- Messages
- 58
- Reaction score
- 8
- Your Mercedes
- E320 cdi sport 2007
I get a knocking noise (only knocks or bangs once) on startup from cold. The local garage had a look when they were replacing a ball joint for me and said they could find nothing mechanically that would explain it. I wonder if it could be the engine or gearbox mounts? Is there a way to check or any other thoughts on what could be causing it?