No.6 Cranks Normally But Will Not Start: Notes

1999 Mazda 626 ES, 2.5 D, StandardSECTION Notes
WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
CRANKS NORMALLY BUT WILL NOT START - DESCRIPTION AND POSSIBLE CAUSE

6 Cranks normally but will not start
DESCRIPTION 
  • Starter cranks engine at normal speed but engine will not run.
  • Refer to symptom troubleshooting in NO.5 ENGINE STALLS-AFTER START/AT IDLE  if this symptom appears after engine stall.
  • Fuel in tank.
  • Battery is in normal condition.
POSSIBLE CAUSE 
  • No battery power supply to PCM
  • Air leakage from intake-air system
  • Open PCM GND or vehicle body GND
  • Improper operation of IAC valve
  • EGR valve malfunction
  • No signal from CKP sensor due to sensor or related wire
  • No signal from CMP sensor due to sensor or related wire
  • Low engine compression
  • Vacuum leakage
  • Erratic signal to ignition coil
  • Poor fuel quality
  • PCV valve malfunction
  • Air cleaner restriction
  • Restriction in exhaust system
  • Disconnected electrical connector
  • Open or short circuit in fuel pump and related harness
  • Inadequate fuel pressure
  • Fuel pump mechanical malfunction
  • Fuel leakage from injector
  • Fuel injector clogging
  • Purge solenoid valve malfunction
  • Immobilizer system and/or circuit malfunction
    WARNING:
    • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
      • Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.
      • Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete "BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.

        (See BEFORE REPAIR PROCEDURE .)

        (See AFTER REPAIR PROCEDURE .)

RENDER: 1.0x

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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.