I bought a cheap pump on eBay….."they’re all the same, right?"
Ummm….no.
The ethanol in my gas ate the diaphram in the pump in 3 days of short bucket testing of the motor. One could say that the Chinese are smart enough to know that only an idiot would put ethanol in gasoline, but here we are just the same.
Bought & installed an OEM pump from OMC and everything is fine. You get what you pay for, I guess. Or as my friend Joe likes to say, "If you have a $10 brain, then buy a $10 helmet…"