Chevrolet Sonic manuals

Chevrolet Sonic Repair Manual: 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 ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

    Warning:

    Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.

    After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the towel in an approved container when the disconnection is complete.

  1. Remove the fuel injector rail cap (1).

  2. Relieve the fuel pressure. Use EN-34730-91 pressure tester  (1).
Fuel Pressure Measurement
Special Tools EN 34730?E1 Pressure Tester For equivalent regional tools, refer to Special Tools Warning: Gasoline or gasoline vapors are highly flammable. A fire could occ ...

Fuel System Cleaning
Note: If the fuel filter is plugged, the fuel tank should be inspected internally and cleaned if necessary. Drain the fuel tank. Refer to  Fuel Tank Draining. Remove the fuel ...

Other materials:

Customer Assistance Office
Chevrolet encourages customers to call the toll-free number for assistance. However, if a customer wishes to write or e-mail Chevrolet, the letter should be addressed to: United States and Puerto Rico Chevrolet Motor Division Chevrolet Customer Assistance Center P.O. Box 33170 Detroit, MI 4 ...

Brake Pressure Modulator Valve Bracket Replacement
Removal Procedure Remove the brake pressure modulator valve (BPMV) and bracket assembly. Refer to Brake Pressure Modulator Valve Replacement. Remove the BPMV bolts (1). Remove the BPMV bracket. Installation Procedure Install the BPMV br ...

Evaporative Emission Canister Vent Solenoid Valve Replacement
Evaporative Emission Canister Vent Solenoid Valve Replacement Callout Component Name Preliminary Procedures Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection. Remove the e ...

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