1977 1150 with no spark? I seriously need help!

[Grinderguy]

I cleaned the motor ground and ohmed the ground to the battery (also cleaned). I rewired most of the motor, I still have no fire at the plugs (only when I turn the key on or off). Then I disconnected everything running to the motor, except the hot and the ground. I also place a jumper on the two hot positions on the switch box. Jumpering across the starter solenoid, to turn the motor over.

If I do the switch box and coil test, I get a hot spark on the coil. If I put the coil wire back in the distributor, place the crank to TDC,I get a spark to the #1 plug.

I believe that the trigger is not functioning. How do I test the trigger?

 

[Chris1956]

There is no trigger test that I know of. Normally you test the wiring, switchbox and coil. If those work, the trigger is considered defective, as it is the last component.

Since you are only getting spark to your #1 cylinder, I would first clean the dist. cap and rotor, and check the plug wires for arcing. Remember treat the rotor like glass as it is fragile and is non-removeable.