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Farmall A stops when it needs power.

C

coutrycousin

Member
I have tried everything with the carb, etc. This 1940 Farmall A will sit and idle with the choke closed for ages, then when it needs power to drive, it stops. Wondering if it could be the manifold, cracked in between?
 
Sounds like the main jet in the carb is clogged. It should not keep running normally with the choke closed and a warm engine. What happens when you speed the engine up and open the choke (no load)? If it dies, you need
to rebuild the carb.
 
Choke closed as in choke is full on?? If yes then you likely have a clogged up carb. It should run with the choke wide open and full throttle. If I where you I would first try these things.
#1 check that you have a good blue/white spark at the center wire of the distributor cap and at all 4 plug wires that will; jump a 1/4 inch gap of more.
#2 pull the carb drain plug and make sure you have a good steady flow of gas that will fill a pint jar in less then 3 minutes.
Post back what you find but very likely the flow is bad or spark is weak
 
you have tryed everything with the carb??... did you actually disassemble it and soak it in carburator cleaner, as thats what it needs from your reply.
 
Did those things, and nothing showed up. There is a hairline crack in the manifold. I tried ether on it, and no unusual rev. Wondering if the manifold could be cracked inside.
 
Pull the air cleaner tube off. You may have to remove the air cleaner it self to do so. Then try to start it holding your hand over the air intake of the carb. You should both get a good suction and gas on yoru hand. Low suction can men a cracked manifold
 
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