I have a single cylinder Briggs 17.5 hp, 31C707-0154. Fuel is running into the cylinder when it sits and it will cause it to hydro lock when trying to cold start.
I have rebuilt the carb. I've checked that the fuel cutoff solenoid is working properly. I replaced the main jet where the fuel solenoid seats. I replaced the bowl and the needle valve. It has a metal valve seat that I have not replaced, it looks fine and has not been tampered with. I can hold the carb upside down and the needle valve will seat properly and cut off any air pushed through it. The float seats level. I am using the correct new bowl gasket.
Anything else I should check? There is no fuel pump, it's gravity fed. I haven't checked but I'm assuming it is not supposed to have a fuel pump, if so it was removed.
I have rebuilt the carb. I've checked that the fuel cutoff solenoid is working properly. I replaced the main jet where the fuel solenoid seats. I replaced the bowl and the needle valve. It has a metal valve seat that I have not replaced, it looks fine and has not been tampered with. I can hold the carb upside down and the needle valve will seat properly and cut off any air pushed through it. The float seats level. I am using the correct new bowl gasket.
Anything else I should check? There is no fuel pump, it's gravity fed. I haven't checked but I'm assuming it is not supposed to have a fuel pump, if so it was removed.