Purging Fuel System (Diesel)
NOTE:
If vehicle is equipped with dual tanks, perform purging procedure on each tank.
- Park vehicle on a level surface. Place drain pan under drain hose. Open drain valve 3-4 turns. With fuel tank cap installed and using air nozzle, apply 3-5 psi (.21-.35 kg/cm2 ) through fuel return hose at injection pump.
- Contaminated fuel will be forced out of tank via filter drain hose. Continue to drain fuel until clear fuel is observed flowing through drain hose. Entire fuel tank may need to be drained. Close drain valve. Install fuel return hose.