Please help. I have a Suzuki 2002 LT-A50 I have fuel flooding in the exhaust down pipe and into my oil behind the piston? And so I have replaced the carb and top end kit and spark plug and gaskets and getting great spark and after I replaced all that I’m still getting same problem of flooding fuel. I’m not sure what else to do to figure out what is the problem please help.

 

With a new carb, the float needle should stop fuel getting past it, into the sump and locking the engine. This is a common problem on LT80s but not, for some reason, on LT50s. However, the main cause is fuel getting past the tap, if you run the bike on PRIme this will happen if the float needle sticks, so never run on prime, only use it to fill the carb if the bike has been run out of fuel. On RUN the fuel stops flowing as soon as the engine stops, as a vacuum pipe from the inlet manifold operates the tap. These taps can go wrong and allow fuel through all the time, or down the vac pipe, but as I wrote above, rare on LT50s.

 

Run NON ethanol fuel. Empty the carb after riding, Put on prime to start. When the fuel fills the bowl, it washes the needle off.