The Ford Barn

TexWillis · 08-26-2014, 09:30 AM

I drove about 750 miles to a car show in Saltillo, Mexico in June. After filling up with gas in Monterey, I started having firing issues. Before making it to Saltillo, I stopped a few times, and eventually just replaced the distributer and carburetor. I could only get up to about 30mph or so. Before leaving, this mechanis in Saltillo brought over some test equipment and jumper wires, and said that my coil was wired backwards. Up to that point, I hadn't touched the coil. We swapped the wires, and lo and behold, it made the 750 miles back running like a fine-tuned sewing machine.

Has anybody ever heard of a coil changing polarity? What could make that happen? Thanks!

08-26-2014, 09:30 AM	#1
TexWillis Junior Member Join Date: May 2011 Location: Winnsboro, TX Posts: 11	Model A with 12v coil I drove about 750 miles to a car show in Saltillo, Mexico in June. After filling up with gas in Monterey, I started having firing issues. Before making it to Saltillo, I stopped a few times, and eventually just replaced the distributer and carburetor. I could only get up to about 30mph or so. Before leaving, this mechanis in Saltillo brought over some test equipment and jumper wires, and said that my coil was wired backwards. Up to that point, I hadn't touched the coil. We swapped the wires, and lo and behold, it made the 750 miles back running like a fine-tuned sewing machine. Has anybody ever heard of a coil changing polarity? What could make that happen? Thanks!