RAM 3500 Chassis Cab Truck 2WD L6-6.7L DSL Turbo (2010)
NOTE: In the illustration provided, the pressure-limiting valve location is indicated by the number (1).
1. Turn the engine off.
2. Reconnect the fuel supply hose.
3. Remove the banjo bolt from the Pressure Limiting Valve on the fuel rail.
4. Install fuel system test fitting 9012 into the Pressure Limiting Valve.
5. Attach one end of a fuel hose to the fuel fitting and put the other end of the fuel hose into a container.
6. Crank the engine and look for fuel leaking from the Pressure Limiting Valve.
NOTE: There should be no fuel flow into the container.
Is fuel flowing into the container?
Yes
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Replace the Pressure Limiting Valve. Verify repair by performing the High Pressure Fuel System test procedure with the scan tool again.
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Perform the POWERTRAIN VERIFICATION TEST - 6.7L. See: Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests/Powertrain Verification Test.
No
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Go To 16
16. INJECTOR RETURN FLOW TEST DURING ENGINE CRANKING @ 200 RPM (NO START)
1. Remove fuel system test fitting 9012 from the Pressure Limiting Valve.
2. Remove the banjo connector from the fuel drain tube at the rear of the fuel filter housing.
3. Install fuel system test fitting 9012 in place of the banjo connector.
NOTE: Do not use test fitting 9014. This fitting will block return flow from the High Pressure Delivery Pump and damage the seal and could
potentially damage the engine.
4. Install a 5/16 diameter rubber fuel hose (Hose A) onto the test fitting and into a fuel container.
NOTE: This will be used to measure the High Pressure Pump return in the next test procedure.
5. Remove the vehicle fuel return line (Quick connect) from the engine fuel drain tube.
6. Install a 5/16 diameter rubber fuel hose (Hose B) onto the engine fuel drain tube and into the fuel container. Make sure test lines are straight and
slope downward their entire length. This is to avoid trapping air/fuel in the lines while testing.
