LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 1982 >> Luv 2.2L Eng VIN S, 4WD >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> Diesel Fuel Injection >> Testing >> Injection Nozzles

Injection Nozzles

  1. Remove nozzles and connect injection nozzle tester. Pump tester lever about 30 times a minute to observe spray pattern. See Fig 1. If spray is faulty, replace injector.
    Fig 1: Injection Nozzle Spray Patterns
    G09315395Courtesy of ISUZU MOTOR CO.
  2. Pump pressure up slowly to note opening pressure. If not within 1705-1850 psi (120-130 kg/cm2 ) for I-Mark models or 1495-1635 psi (105-115 kg/cm2 ) on LUV and PUP models, injector must be replaced.
  3. Check injector nozzles for leakage by installing in tester and maintaining a pressure of 284 psi (20 kg/cm2 ). If any leakage is evident, injector must be cleaned or replaced.
    NOTE: When replacing injection nozzles, install parts in this order: ridged washer (with Blue side toward nozzle), gasket, then nozzle holder.
scientia non olet · About LEMON Manuals