WC runs and then will die

Ive got a 1934 wc, I have only had it for about 6 months so I dont know alot about it. According to the previous owner it had just been completely overhauled and carb/ mag rebuilt. 

Could be what Lonnie said. I also had a problem with my C shutting down sometimes. Finally found the problem. Whoever had been in the carb before me had used a pair of vice grips to remove the float needle seat instead of making a flat tool to fit the slots. They had squeezed the brass seat and gotten it into an oval shape. The needle valve is a triangle shape, and periodically, it would vibrate around and wedge closed, blocking the fuel flow. Replaced it with a new seat. No more problems. Might check that too.  If it starts back up after a minute or two, you have a fuel problem. If it ran wide open on you with the throttle backed off, it could be that the float level is not right or the float may be leaking. take the carb apart and shake the float while holding it up to your ear. If it sloshes, you need to get another float. I think the float should sit level when the carb is upside down when properly adjusted(im not sure about the WC). Check that too.

Fuel tank looks good as new on the inside.. Everytime when it dies I check and its getting fuel to the carb. Im not much of a carb man at all but I will check the carb.  Thanks for the help. I just dont have much I can do to test it except drive it. I guess i could let it run at half throttle for a couple of hrs but i hate to do that.

My 48C had some gasket material that got sucked down into the top of the fuel bowl. for a long time it would just lay across the opening just enough to make the tractor buck and snort like a bronco, the bucking and snorting would eventually dislodge the material and I could never find it. It eventually hit the vortex on the drain just right and it stopped the tractor dead. When I took the piece out tractor started right up. Now I just wonder if my tractor will have the same 'gas mileage'! Lol!

My WD-45 did the same thing. I did all the gas suggestions with no avail. I put new points and condenser in and seems to work fine. But my C quit and would run for a couple of seconds. Cleaned the carb and that did it.

My WD would die after getting fully warmed up. It would start again for a while and die. Very unpredictable. I replaced the coil and it has been fine ever since.

One check for fuel is when it starts to stumble, pull on the choke. If its smooths out for a second or two before it dies, it was fuel starvation. As the fuel level goes low in the float bowl, the engine runs lean and choking brings it back to normal or richer, but it empties the bowl quicker, so it stops sooner. if it runs rougher with black exhaust with the choke on, its not fuel starvation and get that choke off ASAP or you may carbon foul the plugs and if Champions they may not clean up. In general they will last much better if not Champions.

Gerald J.

Gas cap not venting may take that long if the gas level in the tank is low. But coil heating is certainly a possibility.

Gerald J.

I havent found anything in the carb, so I am going to look at the mag. I dont know much at all about them. Is there anything that is tricky, or is it pretty straight forward.. Hows the best way to time them? Thanks for all the replies and help sooner or later i will wear her down and get her running good again.