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Pinpoint Test A : Slow To Fill

WARNING: This page is about a different car, the 2017 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

  1. A1 CARRY OUT INSPECTION AND VERIFICATION

    • Carry out Inspection and Verification.

    Was the cause of the concern found? 

    Yes  REPAIR or INSTALL new components to correct the concern.
    No  GO to  A2.

  2. A2 CHECK THE SYSTEM FOR ANY EVAP DTCs

    • Connect the scan tool.
    • Check the system for any of the following EVAP DTCs: P0446, P0451, P0452, P0453, P0454, P1450, P1451 and P260F.

    Are any of these DTCs present? 

    Yes  REFER to Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid) to diagnosis the EVAP system.
    No  GO to  A3.

  3. A3 MONITOR THE FTP WHILE FILLING THE FUEL TANK

    Is FTP within specification? 

    Yes  GO to  A5.
    No  GO to  A4.

  4. A4 MONITOR THE FTP WHILE FILLING THE FUEL TANK WITH THE EVAP SYSTEM DISCONNECTED

    • Disconnect the fuel tank-to-EVAP canister quick connect coupling at the EVAP canister.

    Is FTP within specification? 

    Yes  INSPECT the EVAP system for blockage or restrictions. REPAIR the blockage or restriction. If the blockage or restriction cannot be repaired, INSTALL new EVAP system components.
    No  GO to  A5.

  5. A5 CHECK THE FUEL TANK FILLER PIPE ASSEMBLY FOR BLOCKAGE OR RESTRICTION

    • Inspect the fuel tank filler pipe and fuel tank filler pipe vent tube (if equipped) for a blockage or restriction.

    Is the fuel tank filler pipe or fuel tank filler pipe vent tube (if equipped) blocked or restricted? 

    Yes  If possible, REPAIR the blockage or restriction. If the blockage or restriction cannot be repaired, INSTALL a new fuel tank filler pipe or fuel tank filler pipe vent tube.
    No  GO to  A6.

  6. A6 CHECK THE FUEL TANK INLET CHECK VALVE

    • Inspect the fuel tank inlet check valve for restriction or sticking.

    Is the fuel tank inlet check valve restricted or sticking? 

    Yes  If possible, REPAIR the restrictions. If the restriction cannot be repaired, INSTALL a new fuel tank. REFER to Fuel Tank and Lines .
    No  GO to  A7.

  7. A7 CHECK TO MAKE SURE THAT THE FUEL LEVEL VENT VALVE IS FUNCTIONING CORRECTLY

    • NOTE: The fuel level vent valve, if equipped, is part of the FP module.

      Remove the FP module. Refer to Fuel Tank and Lines .

    • Inspect the fuel level vent valve for foreign material at the bottom drain hole.
    • Invert the FP. Watch for a movement and a click noise.

    Was a movement/click noise witnessed? 

    Yes  Fuel level vent valve is OK. RETEST the system for normal operation.
    No  INSTALL a new FP module. REFER to Fuel Tank and Lines .
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