I don't think you have a timing chain problem.

You can have precise ignition timing even with a slightly stretched chain. What you won't have is precise valve timing.

I am not familiar with that car but 30 degrees advance is way too far advanced. When you try to start, it kicks backwards and causes the mechanical noises.

How did you adjust the points? Did you use a dwell meter?

If it's all messed up and you're not sure what to do, set the timing static, then start the engine and set it more precisely with a dwell meter and strobe light.


Harry

1992 400SE
1986 325e
1974 2002
2001 CLK320