Fuel Injectors With Fuel Rail Assembly Overview: Notes

WARNING: This page is about a different car, the 2012 Audi S5, 2011 Audi S5, 2010 Audi S5, 2009 Audi S5, and 2008 Audi S5. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Fuel Injections And Fuel Rail, Component

Courtesy of AUDI OF AMERICA, LLC

Radial adjustment
- Replace if damaged
- Clip together with support ring ) FUEL INJECTORS WITH FUEL RAIL ASSEMBLY OVERVIEW - Support ring
Combustion chamber seal
- Do not grease ring or treat with any other lubricant
- Replacing, refer to FUEL INJECTORS .
Fuel injector
- Removing and installing, refer to FUEL INJECTORS
Spacer ring
- Replacing, refer to FUEL INJECTORS .
- The fuel rail wields force via the support ring to hold the fuel injector tightly in the cylinder head.
O-ring
- Replace
- Coat with clean engine oil
Support ring
- Replace
- The fuel rail wields force via the support ring to hold the fuel injector tightly in the cylinder head.
Fuel rail
- Removing and installing, refer to FUEL INJECTORS
High-pressure line
WARNING:
- Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure. Refer to BEFORE OPENING HIGH PRESSURE FUEL INJECTION SYSTEM .
- Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.
- Connectors should not show any signs of damage
- Do not change bend shape
- 25 Nm
High-pressure line
WARNING:
- Before opening high pressure components of the fuel injection system, pressure must be relieved to residual pressure. Refer to BEFORE OPENING HIGH PRESSURE FUEL INJECTION SYSTEM .
- Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.
- Connectors should not show any signs of damage
- Do not change bend shape
- 25 Nm
- High pressure lines, installing, refer to HIGH PRESSURE LINES, INSTALLING
Pressure relief valve 140 bar
- For high pressure line
- 25 Nm
Bolt
- 9 Nm
- Fasten in diagonal sequence in steps
Bolt
- 9 Nm
- Fasten in diagonal sequence in steps