I checked my fuel pressure and it read 2.5 psi.... it did not move at all when I revved the engine....this is on a 1600DP stock engine.... It's lower than the Bentley specs which are between 3.0 and 5.0 psi.... Suggestions? BTW, this is the original fuel pump in my 71 Westy. I did pop the top off about a month and cleaned the screen in it. Trey