A6 Quattro Sedan V8-4.2L (BVJ) (2007)
Fuel Injector: Service and Repair
Type A
Fuel Injectors
Special tools, testers and auxiliary items required
‹› Torque Wrench (V.A.G 1331)
‹› 17 mm Socket (V.A.G 1331/6)
‹› SW 14 Socket, Open Ring (V.A.G 1331/8)
‹› Tool Set (T10133)
Removing
CAUTION!
‹› Fuel system is under high pressure! 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 ] See: Fuel Filter/Fuel Pressure
Release/Service and Repair.
‹› Then wrap a clean rag around the connection and relieve residual pressure by carefully loosening the connection.
-
Remove intake manifold. Refer to => [ Intake Manifold ] See: Engine, Cooling and Exhaust/Engine/Intake Manifold/Service and Repair/Intake
Manifold.
‹› Seal injector channels in cylinder heads with clean cloths.
-
Disconnect electrical harness connectors at fuel injectors.
-
Remove high pressure line - 5 - from connector on fuel rail.
-
Remove high pressure line - 7 - from connector on fuel rail. To do this, counterhold at hex head with and open-end wrench and loosen the union
nut.
-
Remove bolts - 1, 2, 3, 4, 6, 8 -.
‹› Do not change the angles of the high pressure lines.
-
Remove fuel rail with fuel injectors.
If the fuel injectors cannot be pulled out of the cylinder head by hand, proceed as follows:
-
Using a screwdriver, bend the retaining tabs - 1 - of the radial adjustment aside - arrow - and pull the support ring - 2 - from the fuel injector.
