D 350 Pickup L6-359 5.9L DSL (1989)
Remove the lock nut and adjusting screw.
Clean all parts in a strong solution of laundry detergent in hot water.
Use compressed air to dry the parts after rinsing in clean hot water.
NOTE: The pedestals are made from powdered metal and may continue to show wetness after they have been cleaned and dried.
Inspect for excessive wear in the bore and the contact surface for the valve stem.
