Fuel Pump Pressure
- Disconnect hose from fuel pressure regulator to fuel rail. Connect fuel pressure gauge to fuel rail. Disconnect vacuum hose from pressure regulator and connect vacuum pump.
- Start engine. Check and record pressure reading. Pressure should be 33-39 psi (2.3-2.7 kg/cm2 ).
- Apply 15 in. Hg of vacuum to pressure regulator. Fuel pressure should drop to 26-31 psi (1.8-2.2 kg/cm2 ).