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Publication Date: October 6, 2003

1994-1997 F SUPER DUTY, F-250, F-350
1995-1997 E-350

Article 97-6-18 is being republished with updates as part of a consolidated 7.3L diagnostic aid booklet.


The 7.3L Direct Injection Turbo (DIT) engines are built with 0.1016-0.8128mm (0.0040-0.032") clearance between the Camshaft Position (CMP) Sensor and the trigger wheel. At approximately 1.016mm (0.040") clearance, the sensor will fail to synchronize and result in a no run condition. Improper CMP clearance can be seen in the following six (6) symptoms:

  • 1) Fault codes - incorrect synchronization count
  • 2) Low RPM - fails to achieve rated speed for 2-3 minutes after extended cold soak
  • 3) No start - after extended cold soak
  • 4) Runs poorly cold - engine runs OK warm
  • 5) Stall on deceleration - more pronounced cold
  • 6) Starts, runs cold, dies warm, will not restart until cool


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