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 System Priming: 626
Disconnect negative battery cable. Remove fuel pump relay from underhood main relay box. Connect fused jumper wire between ground and fuel pump relay socket terminal No. 30. See Fig 1. Reconnect negative battery cable for about 5 minutes. Inspect for leakage at fuel hoses, clamps and pipe sealing surfaces. If leaks are found, turn ignition switch off. Release fuel system pressure. See FUEL SYSTEM PRESSURE RELEASE . Repair or replace components as necessary and retest fuel system. If no leaks are found, disconnect negative battery cable and then fused jumper wire.
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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.