Ok thanks. I saw some Bosch and some Bosch look alikes that appear the same design as the one on there now- although mine could be 20 or 30 years old as it doesn’t look new for sure.

What about the fuel filter? Will changing that drain the gas tank? Mine is a Bosch and it doesn’t look old but if I’m under there I may change it anyhow.

It appears replacing the fuel pump itself would drain the tank- is that correct?