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1952 Farmall Super A engine shuts off

J

Jim Linville

New User
1952 Farmall Super A

When the engine heats up under heavy load (discing or plowing)the engine shuts off.

I've checked, cleaned, set the ignition but the problems remains

Setting the choke about 3/4 appears to provide some improvement but the engine will still shut off.

Thinking it's a fuel issue, I've checked the vent in the fuel tank cap which seems ok.

Could it be the Ethanol Fuel? With a hot engine, something like fuel vaporizing?

I'm not familiar with checking/setting the carburetor.

Any suggestions?

Thanks in advance,

Jim Linville
 
Have you checked for fire to your plugs asap when it quits? You need to do this before anything cools. If there's weak or no fire to your plugs could mean a weak coil or condenser. You will probably need a helper too. Hal
 
When it shuts off will it restart right away? If it restarts right away it could be something floating around in fuel system or maybe float wanting to stick. If it has to cool down to restart you may have a coil or condensor breaking down.
 
If it takes about an hour to do that then it might be the coil check for spark as soon as it shuts down do not wait even 5 minutes. No spark then most likely the coil. If you have spark then carefully because of it being hot double check you have a good gas flow from the drain plug in the bottom of the carb. Also make sure the fuel line is not to close to the manifold so as to get hot and boil the gas in the line causing a vapor lock
 

My first hunch would be the coil. I've had them shut down and the coil would be too hot to hold your hand on. Replaced the coil and ran fine.

If pulling the choke helps, my second hunch would be a fuel flow restriction. Either the tank, bowl screen, or carburator screen.
 
You say your useing ethanol. Ethanol is corrosive. E10 is more corrosive than E85. It is hard on older rubber & plastic . It could be effecting some of those parts in carb..
 
Dont seem to recall any rubber or plastic in those carbs. Now if he has a rubber line to the carb thats one thing, but I dought ethanol is his problem.
 
John what is the tip of the needle valve made of ? I know all the old ones were metal. The new ones are not metal.
 
for one thing, i would;nt use ethanol. it burns to hot. and the coil sounds rite , or condenser. set carb at 1 and half turns out and ajust warm in or out. rubber particals can interupt the fual flow so like said, if it starts up after it shuts down, clean carb and put on metal lines and new carb kit. remember, these old engines was made to run with lead. not ethanol
 
teddy have you taken one apart. the needle valve that shuts fuel when float raises. If you look at the tip of that needle it is made of rubber or some sort of plastic. I just got done rebuilding one (Zenith).
 
With respect, Alcohol has less energy and burns cooler with higher anti knock properties than Gasoline. It is not a "hot" fuel in any way. The fact that it gets less fuel milage when E85 is used is direct evidence of this. I care enough about alcohol as a fuel (and as a piece of the energy puzzle) that correcting this common error is important. Jim
 
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