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: Precaution
- BEFORE WORKING ON FUEL SYSTEM
- Before working on the fuel system, disconnect the cable from the negative battery terminal.
- Do not work on the fuel system near naked flames. Never smoke during the work.
- Keep rubber and leather parts away from gasoline.
- DISCHARGE FUEL SYSTEM PRESSURE CAUTION:
- DISCHARGE FUEL SYSTEM PRESSURE procedures must be performed before disconnecting any part of the fuel system.
- As some pressure remains in the fuel line even after taking precautions to prevent gasoline spillage, use a shop rag or piece of cloth to prevent gasoline splashes when disconnecting the fuel line.
- Disconnect the cable from the negative battery terminal.
- Remove the circuit opening relay (see ON-VEHICLE INSPECTION ).
- Connect the cable to the battery negative terminal.
Torque: 3.9 N*m (40 kgf*cm, 35 in.*lbf)
- Start the engine.
- Turn the ignition switch to ON after the engine stops.
HINT:
DTC P0171 (system too lean (Bank 1)) or DTC P0174 (system too learn (Bank 2)) may be set.
- Crank the engine again and check that the engine stops.
- Remove the fuel tank cap and discharge the pressure in the fuel tank completely.
- Install the circuit opening relay (see ON-VEHICLE INSPECTION ).
- FUEL SYSTEM
- When disconnecting the high-pressure fuel line, a large amount of gasoline will splash. So take the following precautions.
- Discharge the fuel system pressure.
- Disconnect the fuel tank main tube (see REMOVAL ).
- Drain the fuel remaining in the fuel tank main tube.
- Cover the disconnected fuel tank main tube (fuel tube joint and fuel tube connector) with a vinyl bag to prevent damage and the intrusion of foreign objects.
- Take the following precautions when installing the fuel injector.
- Do not reuse the O-ring.
- Do not damage a new O-ring when installing it into the fuel injector.
- Before installing a new O-ring, apply gasoline or spindle oil.NOTE: Do not use engine oil, gear oil or brake oil.
- When disconnecting the high-pressure fuel line, a large amount of gasoline will splash. So take the following precautions.
Use the Manual With the Right Hardware
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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.
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