Technical 52 Chevy Truck wont start when warm

Hello! (I can't log into my old account, so opened a new one).
I'm hoping someone can help me out... I've got a 1952 Chevy truck (Original 216, 6 volt).
It has always started and ran great. For some reason, it starts and runs like normal, but now it won't start when warm. When I try to start it warm, it turns really slow (slower than the normal 6 volt slow turn) then eventually wont turn. It's like there is some sort of resistance. I've replaced the battery, starter, coil, points, condenser. I'm super confused... Thinking about switching to 12v to just not deal with this anymore, but I'd prefer to keep it 6v... Any advice????

 

Make sure your battery is good first. Then check the grounds.

 

It's a new battery and the factory ground. Maybe I‘ll try pulling the ground and cleaning it up..

 

Inspect the ground cable, clean and retorque your battery grounds at the battery and at the engine. 6 volt systems need a solid ground for starting especially when at operating temperature.

 

Just for ****s and giggles , perhaps replace BOTH battery cables. 00 or larger.

I recently had a gremlin in mine . 12V! Finally replaced the positive cable. Gremlin gone. Cable was corroded inside .

Ben

 

What happens to the battery voltage when it turns slow? If the voltage drops below 4.6 volts, either the battery is bad or the starter is drawing too much current. If the voltage stays at 4.6 volts or above, you have a high resistance connection somewhere. A voltage drop test will tell you where.

 

Where are you? I have a good 216 starter you can have for shipping, nut it is in central CT and they are heavy ******s.
Always a good idea to put at least a general indication of where you live in your profile in case someone local to you can help you.