[AZKen]

If you hooked up a temp line into a gas can and observed the outlet and no flow, you did a good job at testing pump. You are correct, the pump is no good. As said, it must be the diaphragm. To the Chinese Peoples Fuel Pump factory, rubber is old flip flops, dog toys and recycled soccer *****.

I have not experienced all this trouble with fuel pumps.

BTW, Ethanol is the enemy of many "rubber" products. If you can somehow avoid Ethanol, you all may be much happier with your pumps.

Looks like the word B A L L S is prohibited.