Home >> Ford Truck >> 1983 >> F 350 4WD Pickup L6-300 4.9L >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Reading and Clearing Diagnostic Trouble Codes >> 6.0 - 6.4 Miscellaneous Test - Spark Retard Solenoid Check >> 6.2 - 6.4