Fuel Pressure Relieving

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Fuel Pressure Relieving
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.

Before disconnecting fuel lines or hoses, relieve pressure from the system by disabling the fuel pump and then disconnecting the fuel tube/quick connect fitting in the engine compartment.

  1. Remove PGM-FI main relay 2 (A) from the auxiliary under-hood fuse/relay box (to the left of the 12 volt battery).
    Fig 1: Identifying PGM-FI Main Relay 2
    G06429521Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Start the engine, and let it idle until it stalls.
    NOTE: If any DTCs are stored, clear and ignore them.
  3. Turn the ignition switch to LOCK (0).
  4. Remove the fuel fill cap to relieve the pressure in the fuel tank.
  5. Do the 12 volt battery terminal disconnection procedure (see 12 VOLT BATTERY TERMINAL DISCONNECTION AND RECONNECTION ).
  6. Remove the bracket (A) and the quick-connect fitting cover (B) (see FUEL LINE/QUICK-CONNECT FITTING REMOVALΒ  ).
    Fig 2: Bracket, Quick-Connect Fitting Cover And Bolts With Torque Specifications
    G06429522Courtesy of AMERICAN HONDA MOTOR CO., INC.
  7. Check the fuel quick-connect fitting for dirt, and clean it if needed.
  8. Place a rag or shop towel over the quick-connect fitting (A).
    Fig 3: Identifying Quick-Connect Fitting
    G06429523Courtesy of AMERICAN HONDA MOTOR CO., INC.
  9. Disconnect the quick-connect fitting (A): Hold the connector (B) with one hand, and squeeze the retainer tabs (C) with the other hand to release them from the locking tabs (D). Pull the connector off.
    NOTE:
    • Be careful not to damage the line (E) or other parts.
    • Do not use tools.
    • If the connector does not move, keep the retainer tabs pressed down, and alternately pull and push the connector until it comes off easily.
    • Do not remove the retainer from the line; once removed, the retainer must be replaced with a new one.
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.