Mazda Trucks 1987-1993 Repair Guide

Distributor Cap and Rotor

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The 2.2L, 2.6L and 3.0L engines are equipped with a distributor ignition system. Only the 4.0L engine in the Navajo utilizes a distributorless ignition.

REMOVAL & INSTALLATION



Distributor Cap

See Figures 1 and 2

  1. As a precaution, label all of the spark plug wires with their perspective cylinder number.
  2.  
  3. Loosen the cap hold-down screws.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: Loosen the three distributor cap retaining screws ...



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Fig. Fig. 2: ... then remove the cap from the distributor

  1. Remove the cap by lifting straight up to prevent damage to the rotor blade and spring.
  2.  

If the plug wires do not have enough slack to allow cap removal, confirm that they are properly labeled and remove them from the cap.

  1. Installation is the reverse of the removal procedure. Note the position of the square alignment locator, or keyway, and tighten the hold-down screws.
  2.  

Distributor Rotor

See Figure 3



Click image to see an enlarged view

Fig. Fig. 3: After removing the distributor cap, pull the rotor straight up and off of the distributor shaft

  1. Remove the distributor cap.
  2.  
  3. Pull straight up on the rotor to disengage it from the shaft and armature.
  4.  
  5. Installation is the reverse of the removal procedure. Align the locating boss on the rotor with the hole on the armature, or the flat on the shaft, then insure that it is fully seated on the shaft.
  6.  

INSPECTION



Distributor Cap
  1. Wash the inside and outside surfaces of the cap with soap and water then dry it with compressed air.
  2.  
  3. Inspect the cap for cracks, broken or worn carbon button, or carbon tracks. Also inspect the cap terminals for dirt and corrosion.
  4.  
  5. Replace the cap if any of the above conditions are observed.
  6.  

Distributor Rotor

  1. Wash the rotor with soap and water then dry with it compressed air.
  2.  
  3. Inspect the rotor for cracks, carbon tracks, burns or damage to the blade or spring.
  4.  
  5. Replace the rotor if any of the above conditions are observed.
  6.  

 
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