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:
Halogen Bulb Warning
Warning: Halogen bulbs contain gas under pressure. Handling a bulb
improperly could cause it to shatter into flying glass fragments. To help avoid
personal injury:
Turn off the lamp switch and allow the bulb to cool before changing
the bulb.
Leave the lamp switch OFF until th ...
Thrust Washer and Bearing Cleaning and Inspection
Warning: Wear safety glasses to avoid injury when using compressed
air or any cleaning solvent. Bodily injury may occur if fumes are inhaled
or if skin is exposed to chemicals.
Caution: Do not allow the bearings to spin. Turn them slowly by
hand. Spinning the beari ...
Tire and Wheel Assembly Runout Measurement - On-Vehicle
Raise and support the vehicle.
Closely inspect each tire for proper and even bead seating.
If any of the tire beads were not properly or evenly seated, reseat the
tire bead, then proceed to step 4. Refer to Tire and Wheel Removal and Installation.
Wrap the circumferenc ...
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