Installing Fuel Injector

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.

NOTE: Incorrect handling of injectors

Leaks in combustion chamber

→ Teflon sealing rings must always be replaced after removal and before refitting injectors.

→ Do not replace Teflon sealing rings until just before fitting the injector.

→ Install injector immediately after replacing the Teflon sealing ring.

Clean bores for fuel injectors in the cylinder head thoroughly using nylon brush no. 4. Coat brush with acetone or solvent naphtha.
Replace damper ring (damping ring for retainer) -1- and Teflon sealing ring -arrow- .
1. 2.1. Grease damper ring (damping ring for retainer) -1- with Kluber Syntheso GLEP 1.
  
  Fig 1: Identifying Damper Ring
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  
  Installation Position Of Teflon Sealing Ring: -Arrow-
  
  Fig 2: Identifying Teflon Sealing Ring Installation Position
  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
Install fuel injectors -4- in the cylinder head.

Fig 3: Identifying Fuel Injectors And Related Components
Courtesy of PORSCHE CARS NORTH AMERICA, INC.