By TIM O'KEEFE on Unrecorded Date: Edit

I RELOCATED MY FUEL PUMP AND HAVE A FAIRLY NEW FUEL PUMP. I STILL GET VAPORLOCK I THINK. I Was riding today and it stalled again starving for fuel. i let it sit again for 15min and the fuel pump started working again. is it possible for the motor to stop the vaccum even when it's running? i have no idea what todo next.

By TIM O'KEEFE on Unrecorded Date: Edit

WHY DOES TAPPING THE FUEL PUMP CLEAR UP THE PROBLEM SOMETIMES? WHATS INSIDE THE PUMP?

By roadwolf on Unrecorded Date: Edit

tim, inside there are rubber ear flap type gaskets which act like valves. sometimes they stick from gas sedement and oil that gets in from the crankcase through the pulse line. you tapping it frees them up. lotsa' people have this problem.
if you install a clear gas line for the impulse you can monitor easier.

By liflod (Liflod) on Unrecorded Date: Edit

Could it be related to the oil filling procedure that others have mentioned?

By TIM O'KEEFE on Unrecorded Date: Edit

THANKS ROADWOLF, IT SEEMS TO BE RUNNING WELL NOW. IT'S NOT THE OIL FILLING THING, I HAVE IT 18INCHES AWAY AND UPHILL. COULD IT POSSIBLY BE THE OCTANE BOOSTER I USE THAT GUMS UP THE PUMP?

By roadwolf on Unrecorded Date: Edit

tim, i wouldn't think so, but you might want to ask attex bob, he is the man to ask about high octane petrol.