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:
SIR Warning
Warning: This vehicle is equipped with a Supplemental Inflatable Restraint
(SIR) System. Failure to follow the correct procedure could cause the following
conditions:
Air bag deployment
Personal injury
Unnecessary SIR system repairs
In order to avoid the above conditions, ...
Blower Motor Resistor Replacement
Blower Motor Resistor Replacement
Callout
Component Name
Preliminary Procedure
Remove the instrument panel insulator, if equipped.
1
Blower Motor Resistor Screw (Qty: 2)
Caution: Refer ...
Engine Control Module Replacement
Engine Control Module Replacement
Callout
Component Name
Note: If the ECM is to be replaced, the ECM must be RESET
(prepared for removal) prior to removal from the vehicle. Failing to
reset the ECM will result in the ...
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