1992 Mazda 929FACTORY OEM SERVICE PROCEDURE

Fuel Injected Models

  • Check battery condition.
  • Check Electronic Fuel Injection (EFI) main fuse located in fuse box (if equipped).
  • Ensure inertia switch circuit is not open (Navajo).
  • Verify crank angle sensor has correct resistance values (MX-3 1.8L, Navajo and 929).
  • Verify optical sensor is working (Miata, Protege and 323).
  • Verify Hall-Effect sensor is working (MX-3 and 929).
  • Check for leaky fuel injectors or pressure regulator causing warm-engine no start.
  • Check main relay operation. A click should be heard from main relay as ignition switch is cycled on and off.
  • Verify distributor connector parallel terminal resistance is correct.
  • Ensure distributor pick-up coil resistance is correct (if equipped).
  • Ensure fuel system pressure is correct.
  • Ensure pressure regulator control system is okay.
  • Check air intake system for restriction.
  • Check EGR valve and solenoid for correct operation.
  • Check for cracks and poor connections at airflow meter or throttle body.
  • Ensure ignition coil has correct resistance.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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