RAM 3500 Chassis Cab Truck 2WD L6-6.7L DSL Turbo (2010)
2. Remove fuel system test fitting (9012) from the fuel drain tube at the rear of the fuel filter housing.
3. Reconnect the drain tube.
4. Start the engine and let it idle for one minute.
5. Measure the amount of fuel collected from (Hose A) in the graduated cylinder.
6. The fuel flow should be less than 1,000 ml/minute at idle.
Is the flow less than 1,000 ml/minute at idle?
Yes
-
Go To 13
No
-
Replace the High Pressure Delivery Pump. Verify repair by performing the High Pressure Fuel System test procedure with the scan tool again.
-
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.
13. HIGH PRESSURE DELIVERY PUMP PERFORMANCE TEST
1. Disconnect the Fuel Control Actuator harness connector.
2. Disconnect high pressure fuel line from the fuel rail and route the high pressure fuel line into a graduated cylinder.
3. Crank the engine until fuel exits this line. This will not be high pressure fuel.
4. Empty the fuel and crank the engine for three 10 second intervals.
NOTE: This will give you 30 total seconds of flow time. These are broken into three separate intervals to prevent damage to the starter.
5. Fuel flow specification's based on engine cranking speed. If you do not collect the stated amount of fuel in 30 seconds, replace the pump:
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Minimum fuel pump flow at 150 RPM cranking speed is 70 ml.
-
Minimum fuel pump flow at 200 RPM cranking speed is 90 ml.
Does the fuel flow exceed the minimum specification?
Yes
-
Go To 14
No
-
Replace the High Pressure Delivery Pump. Verify repair by performing the High Pressure Fuel System test procedure with the scan tool again.
-
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.
14. CHECKING THE FUEL CONTROL ACTUATOR
1. Reconnect the Fuel Control Actuator harness connector.
2. Reconnect all fuel lines and hoses.
3. Start the engine.
4. With the scan tool, navigate to Systems Tests and select the Fuel Pressure Override Test.
5. Allow the engine speed and fuel pressure to ramp up and stabilize and then stop actuation.
Does the engine speed and fuel pressure ramp up and stabilize when actuated and then come back to rest at idle and stabilize when actuation is
stopped?
Yes
-
The fuel system is experiencing an intermittent condition. Check for any Service Bulletins that may apply.
-
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
-
Replace the Fuel Control Actuator. Verify repair by performing the High Pressure Fuel System test procedure with the scan tool again.
-
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.
15. PRESSURE LIMITING VALVEPRESSURE LIMITING VALVE (NO START)
