ISUZU Amigo/Pick-ups/Rodeo/Trooper 1981-1996

Diesel Injection Timing

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ADJUSTMENT



See Figures 1, 2 and 3

  1. Check to see if the notched lines on the injection pump and mounting plate are aligned.
  2.  
  3. Bring the No. 1 piston to Top Dead Center (TDC) on the compression stroke by turning the crankshaft. The correct notch must be used for alignment as the damper pulley is provided with a total of seven notches.
  4.  
  5. Remove the front upper timing belt cover, then check the timing belt for proper tension and alignment of the timing marks.
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  7. Remove the rocker arm cover and rear camshaft plug, then check that fixing plate J-29761, or equivalent, fits smoothly into the slit at the rear end of the camshaft, then remove the fixing plate.
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  9. Disconnect the injection pipe from the injection pump and remove the distributor head screw and gasket, then install a static timing gauge. Set the lift about 0.040 in. (1mm) from the plunger.
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  11. Bring the piston in No. 1 cylinder to a point 45°-60° before TDC by turning the crankshaft, then calibrate the dial indicator to zero.
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Fig. Fig. 1: Before adjusting the injection timing, make certain that the injection pump and mounting bracket are aligned-2.2L diesel engine



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Fig. Fig. 2: The crankshaft pulley notch must be aligned with the timing pointer attached to the engine block when the No. 1 piston is at TDC on the power stroke-2.2L diesel engine



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Fig. Fig. 3: Move the injection pump as shown to retard or advance the injection timing-2.2L diesel engine

  1. The damper is provided with notched lines as illustrated. The four lines at one side are for static timing and should be used for service purposes. The three lines are for dynamic timing and are used only at the factory.
  2.  
  3. Turn the crankshaft until the line 12° on the damper is brought into alignment with the pointer, then take a reading of the dial indicator. The standard reading is 0.020 in. (0.5mm).
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  5. If the reading on the dial indicator deviates from the specified range, hold the crankshaft to the Injection Pump Setting'' in the diesel tune-up specifications chart. Loosen the two nuts on the injection pump flange.
  6.  
  7. Move the pump to a point where the dial indicator gives a reading of 0.020 in. (0.5mm). Tighten the flange nuts.
  8.  

 
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