Hello , Im in need of a little help here.
I have a 83 Ford B600 with the 370 gas engine. When the bus is cold it will fire right up in a second. It runs and drives great! The problem is I can only start it once a day. The engine will not start unless the engine is cold, and I meen like sitting all night cold. It cranks and smells like it gets flooded out with in a few seconds .

I have done a tune up : plugs , wires , cap , rotor , filters , even the coil.

One thing ive noticed on the carb. there is a good size motor looking thing on the side of it with 2 wires going into it. One of those wires is broken off. I believe its a 2 bl holley. What is that thing? and could that be the problem?

Thank you very much

Update, When engine is even a little warm, there is no spark. When I first turn the key to START there is a quick second of spark than thats it. When I let off the key it fires once or twice. I just put a new ignition module on, no change

Could it be the ignition switch? But then why only when the engine is warm? This is driving me nuts LOL

 

Follow the wires from the distributor. You should run into a ignition module somewhere. I would replace that.

Usually on a truck engine like that, any weird large piece on the side or underneath the carb has something to do with a governor.

 

Replaced Igniton Module Still Fires When Cold Then When Warm Nothing.

 

Check the choke. The motor looking thing could be an electric choke and it the wire it broke it could cause the choke to stick. If the choke sticks it could be flooding the engine when it's warm.

 

Aha, good point. When you go to start it warm, take the aircleaner off and make sure the flapper door on top of the carb(the choke) is open.

 

it has a manual choke. so thats not the prob.. and its getting fuel no problem. ?