2nd Gen Non-Engine/Transmission Genos fuel pressure gauge

[rayplumas]

I replaced the lift pump with the FASS pump in the factory location. I get pressure readings at initial key of 16 lbs. 2000 rpm it will be 12 and sometimes 7. It never seems to be the same???

 

[Geno's Garage]

Fuel pressure will change based on the requirements of the engine load. The best way to determine if your gauge is reading correctly at any time is to put a mechanical test gauge on the truck. Scott

 

[2-ND TIME]

Geno's gauges

Check the grounds and connections for oxidation to the gauge? They could have alittle more resistance then one wants?

 

[Fishin Guide]

Is there an isolator? If so, what type is it.



The most common problem with incorrect fuel pressures come from the gauge install or a leak on the gauge side of the isolator. You can remove the fitting on the gauge side of the isolator and use a blunt object like an eraser head to push the diaphragm back to the engine side. This will most likely cure all your issues.



Dave