How to Replace the Distributor Rotor and Cap on a Mazda 626

Written by dan ferrell
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How to Replace the Distributor Rotor and Cap on a Mazda 626
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The distributor cap and rotor on your Mazda 626 help the ignition system distribute the high voltage produced by the ignition coil to the spark plugs. Over time, the distributor cap and rotor may develop traces of carbon or cracks that lead to engine performance problems like misfiring and backfiring. Both the distributor rotor and cap are readily accessible in your Mazda so you can replace them at home in a matter of minutes using a few simple tools.

Skill level:
Easy

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Things you need

  • Phillips screwdriver
  • Ratchet
  • Ratchet extension
  • Socket
  • White marker or liquid-paper correction fluid

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Instructions

  1. 1

    Open the bonnet and remove the sight shield from the engine top and the air intake assembly, if necessary, to gain access to the distributor. Use a Phillips screwdriver and a ratchet, ratchet extension and socket.

  2. 2

    Locate the distributor on one side of the engine. If necessary, follow the spark plug wires from the engine to the other end of the wires were they all attach to the distributor cap.

  3. 3

    Scribe locating numbers on the wire’s boots where they connect to the distributor cap so that you can reinstall them in their correct location on the new cap. Use a white marker or liquid-paper correction fluid.

  4. 4

    Detach the spark plug wires from the distributor cap by grabbing each wire by the boot. Carefully twist the boot from side to side as you pull the boot off the distributor cap.

  5. 5

    Unfasten the two distributor cap hold-down screws using a ratchet, ratchet extension and socket, and remove the cap from the distributor body.

  6. 6

    Pull the distributor rotor straight off of the distributor shaft. The rotor is the small plastic “T” component in the centre of the distributor.

  1. 1

    Align the protruding pin at the bottom of the new rotor with the hole on the distributor shaft and push the rotor in place until it seats completely onto the distributor shaft.

  2. 2

    Align the small square on the edge of the distributor cap with the square on the outer edge of the distributor body and install the new cap in place.

  3. 3

    Fasten the two distributor cap hold-down screws using the ratchet, ratchet extension and socket.

  4. 4

    Attach the spark plug wires to the distributor cap. Push each of the wire boots over the cap fittings until the wire end inside the boot snap in place over the distributor connecting tower inside the fitting. Make sure each wire is installed in its correct place on the cap.

  5. 5

    Install the sight shield on the engine top and the air intake assembly, if necessary, using the Phillips screwdriver and ratchet, ratchet extension and socket. Close the bonnet.

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