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OT Coil overheating Need Help?

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bishopNlouisiana

Member
I have a 52 8n BUT IT'S FINE. mY QUESTION IS ABOUT THE COIL ON MY 1965 ARMY GENERATOR.

We lived thru Hurricane Laura for the last few days and i tried to use my old military generator that I've had for three years. Every 2-3 months and let it run for about 20 minutes. I fire it up and the electric starter works perfectly and it runs and sound great for it's age. I have changed to oil and I wired it in to our "Outside Kitchen," with breakers and a switch to disconnect the building form the power company. This is our place to go during bad weather outages

I thought it was the perfect setup till Laura came.

The problem is it will start and run for right about 30 minutes and it dies. And will not start again for at least 30 more minutes. It's like it gets hot and dies, cool down and starts again for two days we went thru this.

Question the experts here because its like my old 8n, Could the Coil be overheating and cooling back down with damage to the coil?
 
(quoted from post at 17:21:05 08/28/20) I have a 52 8n BUT IT'S FINE. mY QUESTION IS ABOUT THE COIL ON MY 1965 ARMY GENERATOR.

We lived thru Hurricane Laura for the last few days and i tried to use my old military generator that I've had for three years. Every 2-3 months and let it run for about 20 minutes. I fire it up and the electric starter works perfectly and it runs and sound great for it's age. I have changed to oil and I wired it in to our "Outside Kitchen," with breakers and a switch to disconnect the building form the power company. This is our place to go during bad weather outages

I thought it was the perfect setup till Laura came.

The problem is it will start and run for right about 30 minutes and it dies. And will not start again for at least 30 more minutes. It's like it gets hot and dies, cool down and starts again for two days we went thru this.

Question the experts here because its like my old 8n, Could the Coil be overheating and cooling back down with damage to the coil?
Click to expand...

Dunno. Guessing is easy but unreliable. Simple diagnostics are also easy and much more reliable. Did you check to see if you had spark when it died and would not restart?

TOH
 
(quoted from post at 23:58:20 08/28/20)
(quoted from post at 17:21:05 08/28/20) I have a 52 8n BUT IT'S FINE. mY QUESTION IS ABOUT THE COIL ON MY 1965 ARMY GENERATOR.

We lived thru Hurricane Laura for the last few days and i tried to use my old military generator that I've had for three years. Every 2-3 months and let it run for about 20 minutes. I fire it up and the electric starter works perfectly and it runs and sound great for it's age. I have changed to oil and I wired it in to our "Outside Kitchen," with breakers and a switch to disconnect the building form the power company. This is our place to go during bad weather outages

I thought it was the perfect setup till Laura came.

The problem is it will start and run for right about 30 minutes and it dies. And will not start again for at least 30 more minutes. It's like it gets hot and dies, cool down and starts again for two days we went thru this.

Question the experts here because its like my old 8n, Could the Coil be overheating and cooling back down with damage to the coil?
Click to expand...

Dunno. Guessing is easy but unreliable. Simple diagnostics are also easy and much more reliable. Did you check to see if you had spark when it died and would not restart?

TOH
Click to expand...

It was too hot and rainy strong winds. I didn't have to add fuel since it only ran about six hours total.

I got my s500 generator out and we had extension cords everywhere. Exactly what I tried to avoid this year.

After we clean up the place I'll be running the military gen again for testing.
I'm hoping it's the coil because it would easy the swap out.
I feel fuel is not the problem, It's old design I thought I had a way to avoid the cords. But I'm glad I had a backup plan.
 
BishopNlouisiana,It is a good thing you had a backup generator 500 for your backup military generator.When you check it again, Run it untill it quits then check the spark at the plug wires or coil wire to see if you have spark or not.What brand/type of engine does it have.
 

I think since it's an emergency generator I would up grade all the ignition parts to new. Off hand I would guess condenser.. Coils do get hot.. Make sure you have correct coil for voltage and does it take resistor? They make a internal resistor coil for 12 volt systems and I would suggest getting one of those instead of the external resistor systems. One less thing to fail.
 
(quoted from post at 17:17:53 08/29/20)
I think since it's an emergency generator I would up grade all the ignition parts to new. Off hand I would guess condenser.. Coils do get hot.. Make sure you have correct coil for voltage and does it take resistor? They make a internal resistor coil for 12 volt systems and I would suggest getting one of those instead of the external resistor systems. One less thing to fail.
Click to expand...

I just pulled off the coil. It's a Delco Remy 430.NAPA sells them I think.
 

Late last night I found what I thought would be a simple find, I was surprised that of the 6 places I called, most people had no idea what I was looking for.
I called three Tractor Supply stores and the last one had 1 Ignition coil in stock. I drove an hour to pick it up and installed it this morning.
The old generator fired up faster than it ever has, and ran for 90 minutes until I shut it off. I let it sit to cool down some for five minutes. I hit the starter and it fired back up again.

It went from 30 minutes on and had to cool for 30 more minutes before it would start again. The coil WAS the problem after all.
I learned a lesson about a back up generator, let it run for at least an hour during a test.

It was the coil after all.

Thanks guys
 
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