i have replaced the internal red robber valve and the two one way valves, and i checked it off the engine it appears to suck air well but the output does not appear strong, when I fitted it there appears to be an airlock in the fuel line from the fuel tank, and no petrol comes out the AC line? what am I doing wrong?
When I fitted a new pump, I found I had to “prime” it to get the fuel to start to flow. I did this by undoing the line where it enters the pump from the tank, and then blowing into the tank. You need to block the breather for this to work. I you dont have enough “puff” an air line would work if used carefully, with a rag to block the rest of the filler neck. You only need a little pressure to start it to flow, then reconnect and use the hand prime lever.