Excursion 4WD V8-6.0L DSL Turbo VIN P (2004)
Adamaged or poorly maintained injector may be quieter or have an intermitant buzz/click. The buzz/click may sound abnormal when engine oil
temperature is cold (ambient temperature) and return closer to normal as the engine temperature rises.
The reason for the change in sound results from the build-up of oil sludge on the ends of the spool valve in the upper portion of the injector.
This type of failure is not a defect in the product but rather a result of a poorly performed maintenance schedule.
Bio-Diesel Fuel
Higher than specified amounts of Bio-diesel fuel has been found to cause multiple injector failures. These multiple failures can tend to make a technician
believe that the FICM is malfunctioning.
In these cases, the FICM is working as intended, but movement of the spool in the upper portion of the injector is limited due to sludge build-up on the
ends of the spool.
This type of failure is not a defect in the product but rather a result of an unauthorized amount of Bio diesel fuel being used.
SYNC
SYNC is achieved when the PCM receives a signal from the Crankshaft sensor (CKP) indicating the sensor is working and the correct signal has been
identified by the PCM If the Crankshaft sensor is working improperly the PCM cannot calculate engine speed or cylinder position, preventing fuel
delivery.
Diagnosing SYNC:
Using the WDS, select the SYNC PID This PID will be viewed as a YES or NO on the top of the data screen. KOER, SYNC should always read YES.
