1988 mustang gt no spark

i have repaced the ing.switch and the key switch along with the coil,spark moduglar,pick up,computer,rotor,and the cap. i can pull the coil wire off the cap and put a spark plug in it and get no spark while i turn over the engine but will get 1 spark when i stop rolling over the motor and switch it off

I had one where the toothed wheel in the distributor was bad. Put a ac voltmeter on the pick up wires and crank the engine. You should get over 1 volt ac.

it was the pickup in the dist. the one i bought was bad tookit back and got another one now it works fine.just thought i would do an update incase anyone else had the same problem.keep in mind just because they are new parts dont mean they work