Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Regular pulse fuel pump? Should not be capable of flooding the carburetor. And you have replaced fuel pump and the carburetor? Will it run long enough to run a cylinder test, to see that both cylinders are firing? Loosen the spark plug wires and remove one wire at a time with engine idling. Engine should continue to run, if engine dies when either wire is removed, the opposite cylinder is not firing. Is it getting spark, and does it have compression, are the valves set? .006 inch.
Compression was good and valves are set? Everything points to a bad needle valve and float in the carburetor, but new carb same as old.!!
Same problem, carburetor needle valve and float not controlling the fuel!
That makes no sense. Let me opt out and see anyone else has ever seen this !Sorry.
Thinking about the flooding condition , seems to me that the float may be sinking, from having internal leak. Is the old and new float plastic or metal float? Only way for fuel to get into the oil is through the needle valve leaking, and the float is the control.
Intake manifold gaskets good?
Hi, my name is***** will try to assist you with this issue.
Can you provide the part number of the new carburetor that you have installed on the engine?
Since you say that the carburetor works fine off of the engine but when you put it on it over fuels I am wondering if there is a difference in the venting of the carburetor which when mounted is blocking the atmospheric vent which will cause the carburetor to over fuel.