Attempting to crank new Crate motor - The 1947 - Present Chevrolet & GMC Truck Message Board Network

stingray72 · 11-12-2003, 12:16 AM

My dad has a 1972 Chevy Cheyenne that he has been working on. He's got his new engine in the truck and everything hooked up and is now trying to crank it.

He's got a Mallory magnet breakerless distributor. He's got 12V to the ignition wire when the AC is on. When trying to crank it it drops to 9V on the ignition wire. When the wire is connected to the positive side of the coil there are only 4.75V and there is no fire at the distributor. Tried 2 different coils and had no spark either time at the distributor. The ground appears to be good.

Has anyone got any suggestions to what the problem might be?

11-12-2003, 12:16 AM	#1
stingray72 Red Headed Step Child Join Date: Oct 2003 Location: Atlanta, GA Posts: 1,216	Attempting to crank new Crate motor My dad has a 1972 Chevy Cheyenne that he has been working on. He's got his new engine in the truck and everything hooked up and is now trying to crank it. He's got a Mallory magnet breakerless distributor. He's got 12V to the ignition wire when the AC is on. When trying to crank it it drops to 9V on the ignition wire. When the wire is connected to the positive side of the coil there are only 4.75V and there is no fire at the distributor. Tried 2 different coils and had no spark either time at the distributor. The ground appears to be good. Has anyone got any suggestions to what the problem might be? __________________ "Dinner, the perfect break between work and drunk" -Homer Simpson



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