[Rebel1]

I'm gonna assume the thing has been running and recently quit.

I'm also also gonna assume you have checked the obvious, ie. is there spark and fuel.

Does the distrib rotor rotate....if not maybe a stuffed drive gear...not unknown if wrong gear has been used. Even if the rotor is turning there may still be enough bind at low rpm's to make it look right all is ok. Check timing see if thats changed.

Check continuity of wires going from the engine to the puter. make sure power is at the puter. could be simply a dry joint in a wire.

cheers