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

Distributor

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REMOVAL



See Figures 1, 2, 3, 4, 5, 6, 7, 8 and 9



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Fig. Fig. 1: Distributor mounted to the side of the engine-2.3L and 2.6L engines



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Fig. Fig. 2: Remove the air cleaner and hoses to access the distributor-3.1L engine



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Fig. Fig. 3: On 1.8L and 2.0L engines, remove the distributor cap O-ring



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Fig. Fig. 4: If removing the spark plug wires, tag each wire before disconnecting



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Fig. Fig. 5: Loosen the distributor cap retainer clips



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Fig. Fig. 6: Lift the distributor cap off and place aside



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Fig. Fig. 7: Place alignment marks on the rotor cap, distributor body ...



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Fig. Fig. 8: ... and cylinder head



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Fig. Fig. 9: With the distributor hold-down clamp removed, carefully lift the assembly out of the mounting hole

  1. Disconnect the negative battery cable.
  2.  
  3. Remove the air cleaner and hoses, if additional working space is needed.
  4.  
  5. Tag and disconnect the electrical harnesses either from the distributor or from the ignition coil, depending on model and coil location.
  6.  
  7. Remove the distributor cap from the distributor and position aside. If possible, do not remove the coil or spark plug wires.
  8.  
  9. If equipped, disconnect the vacuum hose from the distributor vacuum advance module.
  10.  
  11. Using paint or equivalent, scribe alignment marks on the rotor-to-distributor and distributor housing-to-engine head or block.
  12.  
  13. Loosen and remove the distributor hold-down bolt and clamp, then carefully lift the distributor out of the engine. Note the position of the rotor alignment.
  14.  
  15. Remove the distributor housing seal and discard.
  16.  

INSTALLATION



Undisturbed Engine

This condition exists if the engine has not been rotated while the distributor was removed.

  1. Lubricate a new housing seal with oil and install on the distributor.
  2.  
  3. With the rotor aligned with the mark on the housing, install the distributor, taking care to align the distributor body mark with the mark scribed on the engine. It may be necessary to lift the distributor and turn the rotor slightly to properly align the gears and the oil pump driveshaft.
  4.  
  5. With the respective marks aligned, install the hold-down clamp and bolt finger-tight.
  6.  
  7. If equipped, connect the vacuum hose to the distributor vacuum advance module.
  8.  
  9. Install and secure the distributor cap to the distributor body.
  10.  
  11. Attach the electrical harness(es) to the distributor or coil, depending on engine and coil location.
  12.  
  13. If removed, connect the spark plug and coil wires.
  14.  
  15. If removed, install the air cleaner and hoses.
  16.  
  17. Connect the negative battery cable. Connect a timing light to the engine (following the manufacturer's instructions), then start the engine and check the timing. Adjust, as necessary.
  18.  
  19. Turn the engine OFF and tighten the distributor clamp bolt.
  20.  
  21. Start the engine and recheck the timing.
  22.  

Disturbed Engine

See Figures 10 and 11



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Fig. Fig. 10: Aligning the 2.3L and 2.6L engines' crankshaft pulley and timing marks



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Fig. Fig. 11: Aligning the crankshaft pulley on a 3.1L engine

This condition exists when the engine has been rotated with the distributor removed.

  1. Lubricate a new housing seal with oil and install on the distributor.
  2.  
  3. Rotate the crankshaft to position the No. 1 piston at Top Dead Center (TDC) of the compression stroke. This may be determined by removing the No. 1 spark plug and inserting a rag into the No. 1 spark plug hole, then slowly turning the engine crankshaft. When the timing mark on the crankshaft pulley aligns with the 0° mark on the timing scale and the rag is blown out by the compression, the No. 1 piston is close to TDC.
  4.  

If you are unsure when TDC is reached, remove the valve cover and watch the rocker arms for the No. 1 cylinder. If the valves move as the crankshaft timing marker approaches the scale, the No. 1 piston is on its exhaust stroke. If the valves remain closed as the timing mark approaches the scale, then the No. 1 piston is approaching TDC of the compression stroke.

  1. Turn the rotor so that it will point to the No. 1 terminal of the distributor cap.
  2.  
  3. Install the distributor into the engine block. It may be necessary to turn the rotor to engage the distributor and oil pump drive gears.
  4.  
  5. Rotate the engine two revolutions and bring the No. 1 piston to TDC again, then check to see that the rotor is pointing toward the No. 1 terminal of the cap.
  6.  
  7. With the marks aligned, install the hold-down clamp and bolt finger-tight.
  8.  
  9. Install and secure the distributor cap.
  10.  
  11. Attach the electrical harness(es) to the distributor and, if equipped, the vacuum advance hose.
  12.  
  13. If removed, connect the spark plug and coil wires.
  14.  
  15. If removed, be sure to install the air cleaner and hoses.
  16.  
  17. Connect the negative battery cable.
  18.  
  19. Connect a timing light to the engine (following the manufacturer's instructions). Start the engine, then check and adjust the timing, as necessary.
  20.  
  21. Turn the engine OFF and tighten the distributor clamp bolt.
  22.  
  23. Start the engine and recheck the timing to verify that it did not change while tightening the hold-down bolt, then stop the engine and remove the timing light.
  24.  

 
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