318 won't stay running

Dartswinger70 said

Yeah, the easy stuff. From what I recall, the OP says it starts and runs for a while, then dies. Would a ballast do that? My experience with ballasts is that #1 you carry a spare in the glove box, # 2 when they go, they go, they burn out causing an open in the circuit. The car will start, when you release they key to run, it stalls. Reading post # 1 this is a possibility.

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Well if it starts and idles for a while, that's not likely to be a ballast. But that is not what post #1 indicates. Post #1 definitely points to an overheated ballast.Or an overheated connection somewhere in the primary wiring. Or an overheated coil.
However,post #18 now adds the possibility of the float bowl running out of fuel.There is an easy test to eliminate one or the other.

So now, all previous helps are back on the table.