Hi folks.
A friend has recently had the 530 head from his b230e reconditioned after a head gasket failure.
Now that the motor is back together and running it has a terrible knocking, slapping noise with any sort of mild load or opening of the throttle quickly. It sounds like bad det so we took timing out of it by adjusting it to bout 5deg adv from the factory 10 +\- 2. Its helped a very small amount but nothing to write home about.
Initially he had the intermediate pulley out and it wouldn't start so timed correctly it fired up. Have we got the cam a tooth out perhaps?
Once it revs up higher its better but still there. Almost sounds like pistons hitting valves but there not. Any ideas or places to start looking for issues? Bad fuel?
Cam