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.
Fuel Pressure Check
Release fuel pressure. See FUEL PRESSURE RELEASE. Install Fuel Pressure Gauge (014-00748) between fuel filter and fuel rail. Ensure pressure gauge drain valve is closed and main valve is open. Using jumper wire, connect Data Link Connector (DLC) fuel pump terminal to ground terminal. See Fig 1 . For fuel pressure specifications, see FUEL PRESSURE SPECIFICATIONS article. Turn ignition on, but do not start engine. Observe gauge reading, and proceed as follows:
- If fuel pressure is zero, go to appropriate NO FUEL PRESSURE.
- If fuel pressure is low, go to LOW FUEL PRESSURE.
- If fuel pressure is high, go to HIGH FUEL PRESSURE.
- If fuel pressure is normal, go to FUEL INJECTOR TEST.
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.