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Pinpoint Test A: Slow To Fill

WARNING: This page is about a different car, the 2008 Ford RV Cutaway, 2008 Ford Econoline, 2008 Ford E450 Super Duty, and 2008 Ford Cutaway. 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? 
    1. YES  : REPAIR or INSTALL new components to correct the concern.
    2. 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, P1443, P1450, P1451 and P260F.
    • Are any of these DTCs present? 
    1. YES  : REFER to appropriate Engine Performance article to diagnosis the EVAP system.
    2. NO  : Go to  A3.
  3. A3 MONITOR THE FUEL TANK PRESSURE (FTP) WHILE FILLING THE FUEL TANK 
    • Monitor the FTP reference value while filling the fuel tank. Refer to appropriate Engine Performance article.
    • Is FTP within specification? 
    1. YES  : Go to  A5.
    2. 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.
    • Monitor the FTP reference value while filling the fuel tank. Refer to appropriate Engine Performance article.
    • Is FTP within specification? 
    1. 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.
    2. NO  : Go to  A5.
  5. A5 CHECK THE FUEL TANK FILLER PIPE ASSEMBLY FOR BLOCKAGE OR RESTRICTION 
    • Remove the fuel tank filler pipe assembly. Refer to FUEL TANK AND LINES - GASOLINE AND DIESEL article.
    • 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? 
    1. 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.
    2. 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? 
    1. YES  : If possible, REPAIR the restriction. If the restriction cannot be repaired, INSTALL a new fuel tank. REFER to FUEL TANK AND LINES - GASOLINE AND DIESEL article.
    2. 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 fuel pump (FP) module.
    • Remove the FP module. Refer to FUEL TANK AND LINES - GASOLINE AND DIESEL article.
    • Inspect the fuel level vent valve for foreign material at the bottom drain hole.
    • Invert the FP module. Watch for a movement and a click noise.
    • Was a movement/click noise witnessed? 
    1. YES  : Fuel level vent valve is OK. RETEST the system for normal operation.
    2. NO  : INSTALL a new FP module. REFER to FUEL TANK AND LINES - GASOLINE AND DIESEL article.
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