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Home >> Chevrolet >> 2012 >> Sonic LS, 4D Hatchback, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Controls/Fuel - 1.8L - Repair Instructions >> Repair Instructions >> Fuel Pressure Relief
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Fuel Pressure Relief

WARNING:

Remove the fuel tank cap and relieve the fuel system pressure before servicing the fuel system in order to reduce the risk of personal injury. After you relieve the fuel system pressure, a small amount of fuel may be released when servicing the fuel lines, the fuel injection pump, or the connections. In order to reduce the risk of personal injury, cover the fuel system components with a shop towel before disconnection. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

  1. Disconnect the battery. Refer to Battery Negative Cable Disconnection and Connection
  2. Loosen the fuel fill cap in order to relieve the fuel tank vapor pressure.
  3. Remove the engine cover, if required.
  4. Wrap a shop towel around the fuel feed pipe at the fuel rail and disconnect the pipe.
  5. Remove the shop towel from around the fuel rail service port, and place in an approved gasoline container.
  6. Connect the fuel feed pipe.
  7. Install the engine cover, if required.
  8. Tighten the fuel fill cap.