Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 733 (FUEL SUPPLY SYSTEM)FUEL PRESSURE TEST
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Fuel Pressure Test
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Fuel Pressure Test
WARNING: This page is about a different car, the 2011 Honda Insight and 2010 Honda Insight. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools Required
- Fuel Pressure Gauge 07406-004000B
- Fuel Pressure Gauge Attachment Set 07AAJ-S6MA150
- Relieve the fuel pressure (see FUEL PRESSURE RELIEVING ).
- Disconnect the quick-connect fitting. Attach the fuel pressure gauge set and the fuel gauge.
- Reinstall the air cleaner (A) (see AIR CLEANER REMOVAL/INSTALLATION ).
- Install PGM-FI main relay 2.
- Start the engine, and let it idle.
- If the engine starts, go to step 7.
- If the engine does not start, go to step 6.
- Check to see if the fuel pump is running: Listen to the fuel filler port with the fuel fill cap removed. The fuel pump should run for 2 seconds when the ignition switch is first turned to ON (II).
- If the pump runs, go to step 7.
- If the pump does not run, do the fuel pump circuit troubleshooting (see FUEL PUMP CIRCUIT TROUBLESHOOTING ).
- Read the fuel pressure gauge. The pressure should be 260-310 kPa (2.7-3.2 kgf/cm2
, 38-46 psi).
- If the pressure is OK, the test is complete.
- If the pressure is out of specification, replace the fuel pressure regulator (see FUEL PRESSURE REGULATOR REPLACEMENT ) and the fuel filter (see FUEL PRESSURE REGULATOR REPLACEMENT ), then recheck the fuel pressure.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.