Farmall Super C Starting Issues

Paul in CT · Jun 21, 2011

I am currently working on a 1951 Super C. I had sent the carb out to be rebuilt. I pulled the head because I has a couple valves that were stuck. Got those moving again and reinstalled the head with a new gasket. New points and condenser gapped to 0.020. New plugs gapped to 0.023. Put the rebuilt carb on and connected the fuel line. I have a good stream of gas to the carb. Tried to start it and it would not fire. Poured a cap full of gas in each cylinder and it ran great for about 5 seconds. Would not start after that. Squirted some gas into the air intake side of the carb and closed the choke. Ran great for about 5 seconds. Would not start after. Pulled the carb and the float is wet so I believe gas is getting in the carb. The idle screw is set to 1-1/4 turns out. Basically the only way I can get it to run is by squirting gas into the carb and then it will run for about 5 seconds. What am I missing? Any help would be appreciated.

Thanks.

CNKS · Jun 21, 2011

When you replace the head you have to set all the valves to specs. Also, I assume you removed the manifold, could be that the intake is sucking air, particularly if you didn't replace the manifold gasket. Sometimes, the so called experts that repair carbs don't get it right. As simple as those carbs are, you should do it yourself.

Oldiron29 · Jun 21, 2011

Paul, How is the compression? Did you test it?
Or I would say your carb is pluged! oldiron29

Paul in CT · Jun 21, 2011

Thank you very much for the replies.

I will check the compression tomorrow.

I had bought new gaskets for the intake manifold but had not put them on. Guess I know what I am doing next.

I will also take the carb all the way apart tomorrow and check to see if any of the passages are blocked.

Thank you for the quick replies and I will let you know what I find.

James Williams · Jun 21, 2011

Paul,It sounds like to me the main jet is stuck in the carb.

jimmy

Janicholson · Jun 21, 2011

A stuck float, or one rubbing the side of the bowl, can keep all gasoline (enough to run) from entering the engine. If squirting gas into the carb opening works, I would bet on internal carb issues rather than all other problems. Do one thing at a time. Jim

El Toro · Jun 22, 2011

Hold your hand over the throat of the carburetor while a helper try's to start the engine. If you don't have much suction that means of have low intake manifold vacuum. You may have a vacuum leak around the intake manifold, carburetor base or stuck rings. Check your valve gap and set them at .o17" cold. You probably should do a compression check on all cylinders and compare readings. Hal

Idaho Ron · Jun 23, 2011

Do you have spark? Ron

Farmall Super C Starting Issues

Paul in CT

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CNKS

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Oldiron29

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Paul in CT

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James Williams

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Janicholson

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El Toro

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Idaho Ron

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