ignition timing

[oyster]

How do you check this? I have shone an ignition strobe through the crankcase bung-hole, but there are no marks that I can see. Does it have to be set with the BMW workshop tool with the crank at tdc as described in the Book, and no other way?

[gus]

Hi oyster
To check use the strobe.The engine should be warm and a idle about a 1000rpm.You should have the timing marks OT=TDC.Z=full advance.S=6 degrees intial advance.
You should be looking for the S mark as the standard set timing under strobe.
You can adjust the timing by moving the magnetic gate on its slots.
gus

[oyster]

I figured there must be a purpose to that crankcase bung other than to watch the toothed edge of the flywheel going round. But WHERE are the referenece marks???????? I couldnt see either a pointer Or any lettering.
Do I have to take all the injector inlet off and view it at a different angle????

[gus]

Use a torch to look through the hole and the marks should be on the flywheel.They are there,trust me.
gus