Simply looking at your fuel
system will give you the answer. Where is your Racor Fuel filter
in the system?
- - If it is between the fuel tank
and the engine lift
pump or any other pressure pump (electric), then the gauge is faulty.
- - If it is between the engine lift
pump or any other pressure pump (electric) and the engine high pressure (injector pump) then the gauge if fine as you are "pumping" fuel
through the filter.
- - If you are "pumping" fuel through the filter (positive pressure on the guage) then you might consider changing the plumbing
to put the Racor fuel filter
between the tank and any pumps. The concern is that "pressuring" fuel through the filter membrane is not a good idea as when the filter "clogs" the pump pressure could rupture the filter membrane and send dirty fuel into your high pressure (injector) pump.