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:
Securing an Add-On Child Restraint in the Vehicle
Warning
A child can be seriously injured or killed in a crash if the child restraint
is not properly secured in the vehicle. Secure the child restraint properly in the
vehicle using the vehicle safety belt or LATCH system, following the instructions
that came with that child restraint and the ...
Heater Inlet Hose Replacement (LUV)
Heater Inlet Hose Replacement
Callout
Component Name
Preliminary Procedures
Drain the engine coolant. Refer to Cooling System Draining and Filling.
Remove the charge air cooler outlet hose. Refer to Charge Air Cooler
...
Output Speed Sensor Replacement
Output Speed Sensor Replacement
Callout
Component Name
Preliminary Procedure
Remove the control valve body. Refer to Control
Valve Body Replacement.
1
Output Speed Sensor Bolt M6 x 1 ...
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