Fuel Delivery and Air Induction: Service Precautions
General PrecautionWARNING: When replacing fuel line parts, be sure to observe the following.
- Put a "CAUTION: FLAMMABLE" sign in the workshop.
- Be sure to work in a well ventilated area and furnish the workshop with a CO2 fire extinguisher.
- Do not smoke while servicing the fuel system. Keep open flames and sparks away from the work area.
CAUTION:
- Before removing fuel line parts, carry out the following procedures:
a. Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in safe area.
b. Release fuel pressure from the fuel lines. Refer to [Fuel Pressure Check:] (QR25DE), (VQ40DE)
c. Disconnect the battery negative terminal.
- Always replace O-rings and clamps with new ones.
- Do not kink or twist hoses when they are being installed.
- Do not tighten hose clamps excessively to avoid damaging hoses.
- Tighten high-pressure rubber hose clamp so that clamp end is 3 mm (0.12 in) from hose end.
- Ensure that clamp screw does not contact adjacent parts.
- After connecting the fuel tube quick connectors, make sure the quick connectors are secure.
Ensure that the connector and resin tube do not contact any adjacent parts.
- After installing tubes, make sure there is no fuel leakage at connections in the following steps.
- Apply fuel pressure to fuel lines with turning ignition switch ON (with engine stopped). Then check for fuel leaks at connections.
- Start the engine and rev it up and check for fuel leaks at connections.
- Use only a Genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.
- For servicing "Evaporative Emission System" parts.
- For servicing "On Board Refueling Vapor Recovery (ORVR)" parts, refer to [EVAP Leak Check]. (QR25DE), (VQ40DE).