2000 502 Mpi's with cool fuel - port fuel pressure when running 43psi (o.k.), starboard fuel pressure 35psi (too low). I plan on pulling both cool fuel units apart and change both the strainer and pressure regulators. The units are tough to get to - should I change the electric pumps while I have them apart? I know they are expensive ($150 ea?), but I don't want to pull them down twice. Anyone have any experience with this? Do the pumps loose pressure, or just quit?

have done many esp in the 496s they do both sometimes loose press some times just quit

If I replace the pumps, anyone have a good source for them? Most of the online supply shops list it as not available.

Thanks.