LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1998 >> Suburban K2500, 6.5 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 32 (Engine Controls - System & Component Testing - 6.5L) >> Fuel System >> Injectors >> Opening Pressure Test

Opening Pressure Test

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1997 GMC Yukon, 1997 GMC Suburban, 1997 GMC Pickup, 1997 GMC Cab & Chassis, and 1997 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. Open tester shutoff valve 1/4 turn from closed position. Slowly depress tester lever and observe gauge. Note pressure at which needle of pressure gauge stops. Some injector nozzles may pop while other injector nozzles may drip (this is not a leak).
  2. Injector opening pressure should not fall to less than 1500 psi (105 kg/cm2 ). Replace any injector nozzle that does not meet lowest acceptable pressure. Release tester pressure.
scientia non olet · About LEMON Manuals