Engine Cranks But Will Not Start

1999 Mazda Protege ES, AutomaticSECTION Engine Cranks But Will Not Start
  1. Check fuel tank contents and fuel gauge accuracy. Check for dirt, water or contamination in fuel.
  2. Check fuel lines and fittings for leaks. If no leaks are found, check fuel delivery system for proper pressure and volumes. Reset Inertia Fuel Shutoff (IFS) switch (if necessary).
  3. Check for damaged or contaminated fuel injector wiring harness and connector. Ensure fuel injectors pulse when engine is cranked.
  4. Check ignition system for strong spark at spark plugs. If no spark exists or if spark is weak, proceed as follows:
    • On all EEC-V models, go to step 1)  of TEST JE in SELF-DIAGNOSTICS - B2500, B3000 & B4000 article.
    • On all others, go to appropriate SELF-DIAGNOSTICS article.
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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.