I've gone over just about everything I can think of that would cause this engine to start hard. The last time I had the motor running I tried a solid fuel line from in the tank right to the carb cause I noticed air in the fuel line. After I tried that there was still air in the line right up at the carb. That got me thinking if the gaskets and the check valves in the pump don't hold a perfect vaccume on this carb it would do 2 things. (1) let air in the fuel line. (2) Allow fuel in the metering chamber to leak into the bore and then into the crank case while the engine is not running flooding the engine before it even has a chance to start. I was also thinking that this problem is specific to this engine only because of the angle they mounted the carb at. Check out the pic and let me know what you guys think of this idea.
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