I just reassemble my fuel pump and I was doing the blow test. I can blow in the input valve but not just totally freely. I have to give a bit of effort. Not a ridiculous amount, but a little. My question is that I can also blow really hard and air will go through the output valve. Only if I blow really hard though. I was wondering when you are doing a blow test on a fuel pump, how freely should air go in the input and should you not be able to blow out of the output valve at all whatsoever?
thanks
thanks