Preliminary Work

Remove engine cover 'design cover).
> 108319 REMOVING AND INSTALLING ENGINE COVER (DESIGN COVER)
Remove oil mist separator.
> 105519 REMOVING AND INSTALLING OIL MIST SEPARATOR
Loosen intake port on throttle housing. For details, see
> 243519 REMOVING AND INSTALLING AIR BOX FOR THROTTLE HOUSING

Disconnect ventilation lines around the intake-air distributor. Naturally aspirated engine > Ventilation on naturally aspirated engines or turbo engine > Ventilation on turbo engines.

Fig 1: Ventilation On Naturally Aspirated Engines Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Ventilation on naturally aspirated engines

1	Engine ventilation line
2	Oil mist separator line to intake-air distributor
3	Tank ventilation
4	Aluminium holder
5	Aluminium screw (holder); see Timing-case cover

Fig 2: Ventilation On Turbo Engines Components Location

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Ventilation on turbo engines

1	Engine ventilation line
2	Oil mist separator line to intake-air distributor
3	Tank ventilation
4	Aluminium holder
5	Aluminium screw (holder); see Timing-case cover