Fuel Injectors With Fuel Rail Assembly Overview: Notes

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