Honda HR-V Owners & Service Manuals

Honda HR-V: Breather Line and Suction Line Inspection (AWD: KA/KC)

Special Tools Required

Fuel Pressure Gauge Attachment Set 07AAJ-S6MA150

Engine Control System & Engine Mechanical - Testing & Troubleshooting

Vacuum Pump/Gauge, 0-30 inHg Snapon YA4000A or equivalent, commercially available

Engine Control System & Engine Mechanical - Testing & Troubleshooting

Inspection

1. Front seat (driver's side) - Remove

2. Rear Heater Duct (Left Side) - Remove

Engine Control System & Engine Mechanical - Testing & Troubleshooting

3. Access Panel - Remove

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Remove the access panel (A) from the floor.

4. Breather Line and Suction Line - Inspect

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Disconnect the quick-connect fitting (A) from the fuel tank unit, and connect a vacuum pump/gauge, 0-30 inHg, to the fuel tank unit as shown
  2. Start the engine, and check the vacuum.
    • If there is vacuum, go to step 3.
    • If there is no vacuum, replace the fuel filter - Refer to: Fuel Tank Unit Disassembly and Reassembly (2WD), or Fuel Tank Unit Disassembly and Reassembly (AWD).

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Turn the vehicle to the OFF (LOCK) mode
  2. Connect a vacuum pump/gauge, 0-30 inHg, to the suction line (A) with the joint in the fuel pressure gauge set, and apply vacuum to the line.

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Raise the vehicle on the lift.
  2. Remove the front center member.
  3. Disconnect the quick-connect fitting (A) from breather line, then plug the suction line with the joint in the fuel pressure gauge set and a rubber cap (B).

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Lower the vehicle
  2. Connect a vacuum pump/gauge, 0-30 inHg, to the suction line (A) with the joint in the fuel pressure gauge set, and apply vacuum to the line.
    • If the line holds vacuum, check for a blockage in the breather line between the fuel tank and the suction joint. If there is blockage, replace the fuel tank - Refer to: Fuel Tank Removal and Installation (AWD), or Fuel Tank Removal and Installation (KA/KC).
    • If the line does not hold vacuum, go to next step.

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Raise the vehicle on the lift.
  2. Connect a vacuum pump/gauge, 0-30 inHg, to the fuel fill pipe side breather line (A), and apply air pressure to the line.
    • If the air pressure holds, or a blockage between the suction line and the fuel fill neck on the breather pipe, and replace the part that is causing the blockage.
    • If the air pressure does not hold, go to next step.

    NOTE: When check for the one way valve tube (B), remove it, then connect a vacuum pump/gauge, 0-30 inHg, with the joint in the fuel pressure gauge set, and apply vacuum or air pressure by one direction to the valve as shown.

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Remove the joint and the rubber cap (C) from the suction line (D), and reconnect the quick-connect fitting.
  2. Install the front center member.

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Lower the vehicle.
  2. Connect a vacuum pump/gauge, 0-30 inHg, to the suction line (A) with the joint in the fuel pressure gauge set, and apply pressure to the line.
    • If the air pressure holds, the breather line and the suction line are OK.
    • If the air pressure does not hold, check for a vacuum leak in the suction line, and replace the suction line if needed.
  3. Reconnect the quick-connect fitting (B).

5. Access Panel - Install

Engine Control System & Engine Mechanical - Testing & Troubleshooting

  1. Install the access panel (A).

6. Rear Heater Duct (Left Side) - Install

Engine Control System & Engine Mechanical - Testing & Troubleshooting

7. Front seat (driver's side) - Install

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