I'm having problems with my car it has cosworth management fitted with msd wasted spark driver (rs turbo 1.6cvh engine)

I haven't connected a rev counter yet could this cause any problems?

The problems I have are no spark or injector pulse when cranking

I do get a spark at all plugs when the ignition is switched on

I'm thinking the crank sensor could be playing up but the fuel pump cuts in when you turn the engine over by hand