RAM 3500 Truck 4WD V10-8.0L VIN W HDC (1999)
Air Injection Check Valve: Testing and Inspection
The one-way check valves are not repairable. To determine condition of valve, remove the rubber air tube from the inlet side of each check valve. Start
the engine. If exhaust gas is escaping through the inlet side of check valve, it must be replaced.
