Removing Tank Vent Valve

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.

Disconnect engine ventilation line at the valve cover, cylinder bank 1 to 4. Naturally aspirated engine -1- or turbo engine -1-
Detach and remove tank ventilation and tank vent valve. Naturally aspirated engine -3- or turbo engine -3- . Disconnect cable plug.

Fig 1: Identifying Engine Ventilation Line Of Naturally Aspirated Engines
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Engine ventilation line
2. Oil mist separator line to intake-air distributor
3. Tank ventilation
4. Aluminum holder
5. Aluminum screw (holder)
Fig 2: Identifying Engine Ventilation Line Of Turbo Engines
Courtesy of PORSCHE CARS NORTH AMERICA, INC.
1. Engine ventilation line
2. Check valve for full-throttle ventilation with lines secured
3. Tank ventilation
4. Aluminum holder
5. Aluminum screw (holder)
6. Belt tensioner
7. Holder
8. Fastening screw