Ok, I'm at a loss, and that doesn't happen often. My friend has an '85 four-eye 5.0 with the average carb'd 5.0, headers, edelbrock.
He calls me yesterday, and says that his car won't run. He had pulled his plugs and cleaned them, then put them back in and hooked his wires up. He started the car and it backfired and died, and hasn't started since. I came over and looked it over, no spark at the plugs, so I tested for spark by putting a plug into the wire coming directly out of the coil. still no spark. I tested for power at the coil, and confirmed that there was power and the ground was good.
We replaced the coil, same problem, no spark. Testing the plug wire coming from the coil with a test light yields a very weak light, very odd, since this thing SHOULD make enough power to fry the test light. Remember, this is the NEW coil.
Sooooo, I wired the coil DIRECTLY to battery positive through a switch to rule out a wiring issue, and I still get extremely weak power out of the coil, not enough to spark. WTF is going on?!?!?!?
He calls me yesterday, and says that his car won't run. He had pulled his plugs and cleaned them, then put them back in and hooked his wires up. He started the car and it backfired and died, and hasn't started since. I came over and looked it over, no spark at the plugs, so I tested for spark by putting a plug into the wire coming directly out of the coil. still no spark. I tested for power at the coil, and confirmed that there was power and the ground was good.
We replaced the coil, same problem, no spark. Testing the plug wire coming from the coil with a test light yields a very weak light, very odd, since this thing SHOULD make enough power to fry the test light. Remember, this is the NEW coil.
Sooooo, I wired the coil DIRECTLY to battery positive through a switch to rule out a wiring issue, and I still get extremely weak power out of the coil, not enough to spark. WTF is going on?!?!?!?