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 MANUALSCHEVROLET1997CAVALIER BASE, 4D SEDAN, AUTOMATIC, 3T40/MD9REPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC ENGINE TESTING - 2.2LBASIC FUEL SYSTEM CHECKSFUEL SYSTEM PRESSURE TESTFUEL PRESSURE CHECK
1997 Chevrolet Cavalier Base, 4D Sedan, Automatic, 3T40/MD9
Fuel Pressure Check
1997 Chevrolet Cavalier Base, 4D Sedan, Automatic, 3T40/MD9SECTION Fuel Pressure Check
- Relieve fuel pressure. See FUEL PRESSURE RELIEF. Install Fuel Pressure Gauge (J-29658-D) using Adapter Kit (J-29658-100). This kit modifies fuel pressure gauge so it may be installed in fuel delivery line with quick-disconnect fittings. Turn ignition on with engine off. Fuel pressure should be within specification. See FUEL PRESSURE table. If no fuel pressure is present, go to step 5).
- Start engine. Fuel pressure should drop 3-10 psi (.2-.7 kg/cm2 ). Turn ignition off. Pressure should hold. If fuel pressure does not hold, check for leaking injectors or fittings. If injectors or fittings are not leaking, replace fuel pressure regulator.
- If fuel pressure is less than specified, check for restricted fuel line or fuel filter. Repair as necessary. If no restriction is evident, connect a 10-amp fused jumper wire between fuel pump feed terminal and fuel pump relay ignition feed circuit. For location of fuel pump relay, see COMPONENT LOCATIONS in the SYSTEM/COMPONENT TESTS article.
- Gradually pinch off fuel return line between gauge and fuel tank. If fuel pressure increases to within specification, replace fuel pressure regulator. If fuel pressure does not increase with line pinched, check for faulty in-tank fuel pump or partially blocked fuel strainer.
- Connect a 10-amp fused jumper wire between fuel pump feed terminal and fuel pump relay ignition feed circuit. For location of fuel pump relay, see COMPONENT LOCATIONS in the SYSTEM/COMPONENT TESTS article. Observe fuel pressure reading. If fuel pressure is still not present, check wiring between test connector and fuel pump. If wiring is okay, replace fuel pump.
- If fuel pressure is present with voltage applied to test connector, test fuel pump relay and voltage supply to relay. See the SYSTEM/COMPONENT TESTS article.
FUEL PRESSURE
| Application | psi (kg/cm2 ) |
|---|---|
| 2.2L | 41-47 (2.9-3.3) |
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.