Chevrolet Sonic Repair Manual: Fuel Pressure Measurement
Special Tools
EN 34730?E1 Pressure Tester
For equivalent regional tools, refer to Special Tools
- Remove the protective cap from the test connection.
- Attach the EN 34730?E1 tester (1) to the test connection.
- Start the engine.
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:
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.
- Bleed the pressure tester at idling speed.
- Collect the exiting fuel in a suitable container.
- Read the fuel pressure from the pressure gauge.
Caution:
Clean all of the following areas before performing any disconnections in order to avoid possible contamination in the system:
- The fuel pipe connections
- The hose connections
- The areas surrounding the connections
Fuel Injector Replacement
Fuel Injector Replacement
Callout
Component Name
Preliminary Procedure
Disconnect battery negative cable. Refer to Battery Negative ...
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 ...
Other materials:
Sunroof
On vehicles with this feature, the sunroof only operates when the ignition is
turned to ON/RUN or Retained Accessory Power (RAP) is active.
Open/Close: To open the sunroof, press and hold the rear of the switch. To close
the sunroof, press and hold the front of the switch.
Vent: Press and ho ...
Drive Range - Fourth Gear (Gen 2)
As vehicle speed increases, the transmission control module (TCM) processes input
signals from the automatic transmission input and output speed sensors, the throttle
position sensor and other vehicle sensors to determine the precise moment to command
OFF the normally-low 35R pressure control ...
Control Valve Body Assembly Disassemble (Gen 1)
Control Valve Body Assembly Disassemble
Callout
Component Name
1
Control Solenoid Valve Support
2
Control Valve Body Bolt M5 x 40.5 (Qty: 1)
3
...
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