I have a S50C with a flat head 4cyl Continental, the engine will idle fine, but as soon as you press on the accelerator it wants to stall out. When pressing the button on the vaporizer the problem disappears, so I replaced the vaporizer and the problem is still there. I noticed the fuel line from the vaporizer to the carb is worn, but doesn't appear to be any leaks, is it the carburetor? The truck has sat for about a month and ran perfect before this.

Thanks
Bob