69 gmc needs started no spark

[lil hoodlum]

Originally Posted by pbro

What are your guys thoughts on this, taking the dizzy out and placing it in a vice, supply it with power and hooking it up to a drill. I then use a spark plug wire to see if it sparks? Any concerns?
Posted via Mobile Device

Why not just leave the distributor in the engine and pull one of the sparkplug wires off of a sparkplug and hold the sparkplug wire with a pair of insulated pliers within a 1/4 or less to the sparkplug. What you are looking for is a blue arc of electricity the closes the gap between the sparkplug wire and sparkplug. If it is working correctly, it will fire when the rotor hits that portion of the cap of the sparkplug wire you are holding. Yes, someone else should be trying to start the motor so that the rotor is moving.

Please please use an insulated tool to hold the sparkplug wire. I would hate for you to get a jolt if it is working correctly.

If you get no spark, you know the problem is the distributor and/or wiring up of the distributor.

Good luck,

Keith