I think that would work with some type of regulator in the fuel supply line to the carb. Otherwise you are sending a constant 5+ psi of pressurized fuel into the carb. Normally the carb sees that pressure going from nothing to whatever the exhaust sends it depending on the RPM of the engine. So yes at anything but wide open it will be too rich and load up.
ORIGINAL: cstewa
I have a new Saito 150 I am about to break in and I read about a guy putting a check valve on the pressure line from the tank to the muffler. Apparently this will pressurize the tank at higher throttle and then keep it pressurized at lower thottle settings.
Does this work? Or will it make the low end run rich?