The Ford Barn

philipswanson · 08-25-2023, 11:33 AM

I had to change the coil in my stock 51 Ford with 6V + ground system. I hooked up the ignition side to the negative side of the coil and the ground side (points) to the positive side of the coil. No spark. Is this wrong? Anybody have this problem?

Kube · 08-25-2023, 12:58 PM

Was the old coil working?

JayChicago · 08-25-2023, 02:03 PM

Quote:

Originally Posted by philipswanson

6V + ground system. I hooked up the ignition side to the negative side of the coil and the ground side (points) to the positive side of the coil...Is this wrong?

Not wrong. That is correct.

Got voltage at the coil coming from the ignition switch?

philipswanson · 08-25-2023, 03:37 PM

Quote:

Originally Posted by JayChicago

Not wrong. That is correct.

Got voltage at the coil coming from the ignition switch?

Yes and old coil may or may not have been working. Not sure. Hot wired negative to battery and still no spark.

JayChicago · 08-25-2023, 04:12 PM

Ok. You have voltage at the coil. You have tried two different coils. My next thought goes to condenser. Have you tried a new condenser?

philipswanson · 08-25-2023, 05:25 PM

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I found the problem. The condenser was the issue. It measured .3 ohms to ground. Almost a direct short. I changed that and it fired right up. It was new and defective. Probably another China product. Lesson learned: Make sure you check them with a ohm meter first. There should be no continuity to ground!

08-25-2023, 11:33 AM	#1
philipswanson Senior Member Join Date: Oct 2015 Location: Bonita, CA Posts: 1,374	Changed Coil, No Spark I had to change the coil in my stock 51 Ford with 6V + ground system. I hooked up the ignition side to the negative side of the coil and the ground side (points) to the positive side of the coil. No spark. Is this wrong? Anybody have this problem?

08-25-2023, 12:58 PM	#2
Kube Senior Member Join Date: May 2010 Location: Wisconsin, USA Posts: 9,020	Re: Changed Coil, No Spark Was the old coil working? __________________ "I can explain it for you. However, I can't understand it for you".

08-25-2023, 04:12 PM	#5
JayChicago Senior Member Join Date: Jan 2019 Location: Chicago Posts: 733	Re: Changed Coil, No Spark Ok. You have voltage at the coil. You have tried two different coils. My next thought goes to condenser. Have you tried a new condenser?

08-25-2023, 05:25 PM	#6
philipswanson Senior Member Join Date: Oct 2015 Location: Bonita, CA Posts: 1,374	Re: Changed Coil, No Spark Sponsored Links (Register now to hide all advertisements) I found the problem. The condenser was the issue. It measured .3 ohms to ground. Almost a direct short. I changed that and it fired right up. It was new and defective. Probably another China product. Lesson learned: Make sure you check them with a ohm meter first. There should be no continuity to ground! Last edited by philipswanson; 08-25-2023 at 09:51 PM.