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 MANUALSCHEVROLET2000CHEVY EXPRESS G3500, VAN PASSENGER, 7.4 JREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURESBASIC FUEL SYSTEM CHECKS (DIESEL)FUEL SYSTEM PRESSURE TEST
2000 Chevrolet Chevy Express G3500, Van Passenger, 7.4 J
Fuel System Pressure Test
2000 Chevrolet Chevy Express G3500, Van Passenger, 7.4 JSECTION Fuel System Pressure Test
NOTE:
For fuel pump circuit testing, see appropriate diagnostic procedure under NO START DIAGNOSIS .
- Turn ignition off. Install "T" adapter and pressure gauge at injection pump. Start engine and measure fuel pressure.
- If fuel pressure is not 4 psi (.28 kg/cm2 ), check fuel lines and fuel tank sending unit for restriction. If fuel lines and sending unit are okay, replace fuel pump.
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.