Originally posted to 6.2 / 6.5 forum.

I've spent the better part of the last 8 hours under my low-rider dually. I had a starter problem. Replaced it with a NAPA rebuilt unit. It turned out to be defective. Replaced it with a new (rebuilt) unit. Working toward a diagnosis. I isolated the starter using a remote starter switch from the positive battery terminal to the Bendix solenoid. The motor will crank three or four times (won't start because ignition switch is bypassed), then it just clicks. I can turn the crank shaft by using a ratchet on the crank pulley. Then the starter will crank the engine again. I don't think I have a flywheel issue (5 speed manual transmission) because it doesn't happen in the crank position (I marked the ring gear). The problem "feels" electrical. Any thoughts?

This is my work truck and I really need to get it back on the road.