964C2 does not spark
 

964C2 does not spark

and I can not start engine.

where break?

First thingI assume the engine cranks normalyy. If sothen I would suspect the DME relay($30) .up to about 1990 it,s under the seat beside the DME (computer) itself.I think it then changed to a style with flat pins instead of round and may be in the fusebox with the other relays. A common no spark cause. The flywheel position or referance sensor can be another cause.