RAM 2500 Truck 4WD V8-5.9L VIN Z LDC (1998)
Fuel Injector: Pressure, Vacuum and Temperature Specifications
Normal operating fuel pressure should be 339 kPa +/- 34 kPa (49.2 psi +/- 5 psi). If pressure falls below 30 psi for five minutes. It must be determine
if a fuel injector, fuel pump module check valve or fuel tube/line is leaking.