23 hp vanguard starving for fuel.

[whiskeyjack1948]

I had my engine serviced and he changed oil and filter, air filter, flushed fuel tanks and lines, replaced the carb and the fuel pump. I have checked the fuel line to the carb and delivery is great. With the engine running full throttle I turn the blades on and the engine stops immediately. If I pull the choke and turn the blades on they turn fine. The new carb is the proper replacement so I am stumped.

 

[Fish]

Does your carb have a low speed mixture screw? If so, richen it a bit.

 

[Fish]

Put up some pics of your old carb.

 

[whiskeyjack1948]

Does your carb have a low speed mixture screw? If so, richen it a bit.

No there is no adjustment on the new carb. It is part # 845587. My engine is on the fits list for this carb. Engine is386777 0123-E1

 

[whiskeyjack1948]

Put up some pics of your old carb.

As you can see on the last photo, one valve has the adjustment broken off. Hence the new carb.

 

[whiskeyjack1948]

Could this be caused by a leaky gasket between carb and engine? Or between breather and carb?

 

[whiskeyjack1948]

Could this be caused by a leaky gasket between carb and engine? Or between breather and carb?

I removed the carb and sealed the gaskets. The carb is not the number it was supposed to be. Would the wrong size jets cause this and could I drill them larger as they are non removable?