Check the fuel pump one-way valve on the output side. Disconnect the fuel line at the carb inlet and deadhead it into a 1-10 PSI pressure gauge. Start the engine and run it for a few seconds on the fuel in the float bowl. The pressure gauge should read somewhere in the 3-5 PSI range. Shut the engine down.

Now- - - -

Important- - - -

The pressure should remain on the gauge for several seconds, maybe as much as 10-15, after shutdown. If it does not, you have a bad output check valve. Change the fuel pump. The inlet check valve can be checked the same way using a vacuum gauge at the fuel tank side of the pump. Vacuum should also stay up for a short time, indicating the inlet check valve is good.




"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!