LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Isuzu >> 1995 >> Trooper S, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Fuel System >> Fuel Pressure & Fuel Pump Relay Test >> Fuel Pressure
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Fuel Pressure

  1. Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE  . Attach Fuel Pressure Gauge Set (J-34730-1) and Adapter (J-35957-1) to Schrader fitting on fuel rail. Disconnect pressure regulator vacuum hose. Turn ignition on. Allow fuel pump to run for about 2 seconds.
  2. Fuel system pressure should be about 41-46 psi (2.8-3.2 kg/cm2 ). See FUEL PUMP PERFORMANCE  table. Start engine and check for leaks. Connect pressure regulator vacuum hose. If engine will not start, fuel pump relay can be by-passed. Also refer to the appropriate CHART A-3 - ENGINE CRANKS BUT WILL NOT RUN  under TROUBLE SHOOTING CHARTS. With engine idling, fuel pressure should be 25-30 psi (1.8-2.1 kg/cm2 ).
NOTE: To test the fuel pump relay circuit, proceed to CHART A-5 - FUEL PUMP RELAY CIRCUIT  under TROUBLE SHOOTING CHARTS.
scientia non olet · About LEMON Manuals