Fuel Injectors

WARNING: This page is about a different variant/trim than selected.

Removing

Remove intake manifold and fuel rail. Refer to INTAKE MANIFOLD WITH FUEL RAIL .

Removing fuel injectors, in the event that they are stuck in the fuel rail

Carefully pull the fuel injectors out of the fuel rail.

Removing fuel injectors, in the event that they are stuck in the cylinder head

Special tools and workshop equipment required

Tool set with puller T10133

NOTE:

The puller T10133/2 was changed and is now called puller T10133/2-A. If the new tool is not available, the old one can be modified.

Modify the puller T10133/2 to create puller T10133/2-A.

Special tools and workshop equipment required

Round file approximately 6 mm

-- File the semi-circle as shown in the illustration. The semi-circle allows the tool to slide farther onto the fuel injector, thus providing the tool with a larger contact surface.

-- Mark the modified tool with an "A" at the end of the tool number.

Fig 1: File Semi-Circle

Courtesy of AUDI OF AMERICA, LLC

Fig 2: High-Pressure Fuel Injector - Component Overview

Courtesy of AUDI OF AMERICA, LLC

1 - Radial compensation, replace if damaged

2 - Combustion chamber sealing ring (Teflon sealing ring), replace, the ring must not be greased or handled with any other lubricants when installing.

3 - Groove on fuel injector

4 - Spacer ring, replace if damaged

5 - O-ring (replace, coat lightly with clean engine oil when installing)

6 - Support ring (via this support ring, fuel rail utilizes the force to hold the fuel injector in place in the cylinder head).

NOTE:

With fuel injector installed, the radial adjustment -1- is clipped into the support ring -6-. To remove the fuel injector, the support ring must be separated from the fuel injector in order to install pullerT10133/2 into the indentation on the fuel injector -3-.

Fig 3: High-Pressure Fuel Injector - Component Overview

Courtesy of AUDI OF AMERICA, LLC

-- Cover open intake channels with a clean rag.

-- Disconnect electrical harness connector at fuel injector that is to be removed.

-- Bend retaining tabs of radial compensation to the side using a screwdriver and pull off support ring from fuel injector.

Fig 4: Bending Retaining Tabs Of Radial Compensation To Side

Courtesy of AUDI OF AMERICA, LLC

-- Position puller T10133/2A in the groove on the fuel injector.

Fig 5: Identifying Position Of Puller T10133/2A In Groove On Fuel Injector & Trim Removal Wedge T10133/16

Courtesy of AUDI OF AMERICA, LLC

-- Then position the trim removal wedge T10133/16 and remove the fuel injector by loosening the bolt -1-.

NOTE:

The combustion chamber seal must always be replaced before re-installing the high-pressure fuel injector. Refer to TEFLON COMBUSTION CHAMBER SEAL .