Chevrolet Sonic Repair Manual: Fuel System Cleaning
- Drain the fuel tank. Refer to Fuel Tank Draining.
- Remove the fuel pump module assembly. Refer to Fuel Tank Fuel Pump Module Replacement.
- Inspect the fuel pump module strainer. Replace the pump module assembly if the fuel strainer is contaminated.
- Flush the fuel tank with hot water.
- Pour the water out of the fuel sender assembly opening in the fuel tank. Rock the fuel tank in order to be sure that the removal of the water from the fuel tank is complete.
- Allow the tank to dry completely before reassembly.
- Disconnect the fuel feed pipe at the engine fuel rail. Refer to Plastic Collar Quick Connect Fitting Service.
- Clean the fuel pipes by applying air pressure in the opposite direction of the fuel flow.
- Connect the fuel feed pipe to the engine fuel rail. Refer to Plastic Collar Quick Connect Fitting Service.
- Install the fuel pump module assembly. Refer to Fuel Tank Fuel Pump Module Replacement.
Note:
If the fuel filter is plugged, the fuel tank should be inspected internally and cleaned if necessary.
Note:
When flushing the fuel tank, handle the fuel and water mixture as a hazardous material. Handle the fuel and water in accordance with all applicable local, state, and federal laws and regulations.
Note:
Only use oil-free compressed air to blow out the fuel pipes.
Fuel Pressure Relief
Special Tools
EN-34730-91 Pressure Tester
For equivalent regional tools, refer to Special Tools.
Warning: Gasoline or gasoline vapors are highly flammable. A fire
could occur if an ig ...
Fuel System Description
Fuel System Overview
The fuel system is an electronic returnless on-demand design. A returnless
fuel system reduces the internal temperature of the fuel tank by not returning
hot fuel f ...
Other materials:
Water Inlet Replacement (LUV)
Removal Procedure
Drain the cooling system. Refer to Cooling System Draining and Filling.
Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Duct
Replacement.
Remove the engine coolant temperature sensor connector (1) and the radiator
ou ...
Engine Coolant Temperature Sensor Replacement - Radiator
Engine Coolant Temperature Sensor Replacement - Radiator
Callout
Component Name
Preliminary Procedure
Drain the cooling system. Refer to
Cooling System Draining and Filling.
Remove the right front wheelhouse liner. Ref ...
Control Solenoid Valve and Transmission Control Module Assembly Installation
Control Solenoid Valve and Transmission Control Module Assembly Installation
Callout
Component Name
1
Control Solenoid Valve Assembly Filter Plate
Caution: Use care when removing or installing the filter plate
...
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