Preliminary Work

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2018 Porsche Cayenne, 2017 Porsche Cayenne, 2016 Porsche Cayenne, 2015 Porsche Cayenne, and 2014 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Toxic substances

Danger of poisoning or suffocation
Danger of burns to the eyes and skin

→ Ventilate the work area well.

→ Never ingest or inhale.

→ Read specific information on the Hazard Sheet.

→ Do not smoke, eat or drink in the work area.

WARNING: Highly inflammable or explosive materials

Danger of fire or explosion

→ Avoid contact with hot parts or sources of ignition.

→ Use suction to remove ignitable vapors.

→ Attach warning sign in a clearly visible position.

NOTE: Dirt on injection system components

Material damage
Rough-running engine
Bad exhaust emissions

→ Thoroughly clean connection points and adjacent areas before loosening them. If the engine is very dirty, wash it before starting disassembly work.

→ Lay removed parts on a clean surface and cover them. Do not use fibre-shedding cloths.

→ Carefully cover components or seal them if repair work will not be carried out immediately. Place rubber caps on connections. Seal intake openings with film or adhesive tape.

→ Only install clean parts. Do not take spare parts out of the packaging until just before installation.

→ Never use compressed air when the system is open. Do not move the vehicle.

WARNING: Leaking fuel supply lines

Emerging fuel
Risk of fire

→ Perform leak test.

Information

Do not bend high-pressure lines. Always remove the high-pressure distributor pipe and other fuel-supply components in the high-pressure area completely. Check that the connection points are not damaged and are perfectly clean and make sure there is no thread damage. Fit union nuts on all connection points by hand before screwing in screws or bolts. Remove dirt on the conical/ball joints. Check connection points for leaks following fitting .

Information

The ignition must be switched off when working on the fuel system .
Absorb any escaping fuel using a suitable binding material or a cloth .
Cloths which have absorbed fuel must be disposed of according to the applicable national laws .
The fuel system must be depressurized before starting work on it .
Only work on the fuel system in well-ventilated rooms .
Any seals which have been removed must always be replaced .
After disassembly work on the high-pressure injection system, fit the components to the prescribed torques.
Visible threaded joints must be inspected for leaks with the engine idling after a test drive.
For the check to be performed correctly, the components to be checked must not contain any fuel. When dismantling, remove fuel from the lines.

Remove rear engine-compartment cover. → REMOVING FRONT TRIM PANEL (ENGINE COMPARTMENT) - section on "Removing"
Pull out fuse for the fuel pump in the central electrical system or disconnect the battery. This ensures that the fuel pump does not start up when a door is opened.