Nissan Z - ZX 1970-1988 Repair Guide

Distributor

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See Figures 1, 2 and 3



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Fig. Fig. 1: Exploded view of electronic distributor-1974-78 models



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Fig. Fig. 2: Exploded view of electronic distributor-1979-83 models



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Fig. Fig. 3: Exploded view of electronic distributor for turbo-equipped engine-1982-83 models

REMOVAL



See Figures 4, 5, 6, 7, 8 and 9

  1. Remove the high-tension wires from the distributor cap terminal towers, noting their positions to assure correct reassembly. Number the wires with pieces of adhesive tape if they are not already numbered.
  2.  
  3. Note the position of the rotor in relation to the base. Scribe a mark on the base of the distributor and on the engine block to facilitate reinstallation. Align the marks with the direction the metal tip of the rotor is pointing.
  4.  
  5. Unlatch the two distributor cap retaining clips or screws and remove the distributor cap.
  6.  
  7. Disconnect the distributor wiring harness.
  8.  



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Fig. Fig. 4: Remove the distributor cap by detaching the clips or unfastening the retainer screws



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Fig. Fig. 5: Scribe alignment on both the rotor, distributor body and cylinder head



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Fig. Fig. 6: Disconnect the ground wire attached to the distributor body



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Fig. Fig. 7: Disconnect the distributor main wire harness



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Fig. Fig. 8: Loosen and remove the distributor lockbolt and plate



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Fig. Fig. 9: Lift the distributor out of the hole in the cylinder head

  1. Disconnect the vacuum line(s).
  2.  
  3. Remove the distributor-to-engine bolt and hold-down plate.
  4.  
  5. Lift the distributor assembly from the engine.
  6.  

INSTALLATION



Undisturbed Engine
  1. Insert the distributor shaft and assembly into the engine. Line up the mark on the distributor and the one on the engine with the metal tip of the rotor.
  2.  

Make sure that the vacuum advance diaphragm is pointed in the same direction as it was pointed originally. This will be done automatically if the marks on the engine and the distributor are lined up with the rotor.

  1. Install the distributor hold-down bolt and clamp. Leave the screw loose enough so that the distributor can be moved with heavy hand pressure.
  2.  
  3. Connect the distributor wiring harness. Install the distributor cap on the distributor housing. Secure the distributor cap with the spring clips or screws.
  4.  
  5. Install the spark plug wires. Make sure that the wires are pressed all the way into the top of the distributor cap and firmly onto the spark plug.
  6.  
  7. Adjust the point dwell (if equipped with points) and set the ignition timing.
  8.  

Disturbed Engine
  1. It is necessary to place the No. 1 cylinder in the firing position to correctly install the distributor. To locate this position, use the ignition timing marks on the crankshaft front pulley.
  2.  
  3. Remove the No. 1 cylinder spark plug. Turn the crankshaft until the piston in the No. 1 cylinder is moving up on the compression stroke. Stop turning the crankshaft when the timing marks are aligned.
  4.  

To determine TDC of the compression stroke, place your thumb over the spark plug hole to feel the air being forced out of the cylinder.

  1. Oil the distributor housing lightly where the distributor bears on the cylinder block.
  2.  
  3. Install the distributor so that the rotor points toward the No. 1 spark plug terminal tower position when the cap is installed. Of course you won't be able to see the direction in which the rotor is pointing if the cap is on the distributor. Set the cap on the top of the distributor and make a mark on the side of the distributor housing just below the No. 1 spark plug terminal. Make sure that the rotor points toward that mark when you install the distributor.
  4.  
  5. When the distributor shaft has reached the bottom of the hole, move the rotor back and forth slightly until the driving lug on the end of the oil pump shaft enters the slots cut in the end of the distributor shaft and the distributor assembly slides down into place.
  6.  
  7. When the distributor is correctly installed, the breaker points (conventional engines) should be in such a position that they are just ready to break contact with each other, the reluctor teeth (electronic ignition engines) should be aligned with the pick-up coil or on the Light Emitting Diode (LED) type, align the rotor with the No. 1 spark plug terminal. This can be accomplished by rotating the distributor body after it has been installed in the engine. Once again, line up the marks that you made before the distributor was removed.
  8.  
  9. Install the distributor hold-down bolt.
  10.  
  11. Install the spark plug into the No. 1 cylinder and continue from Step 3 of the installation procedure, engine undisturbed.
  12.  

 
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