Cylinder Head: Notes

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

Special tools and workshop equipment required

Hose Clip Pliers V.A.G 1921
Polydrive Bit and Drive Socket T10070

Removing

Engine installed.

-- Drain the coolant. Refer to COOLING SYSTEM, DRAINING AND FILLING .

-- Remove the engine cover -arrows-.

Fig 1: Identifying Engine Cover

Courtesy of AUDI OF AMERICA, LLC

-- Remove fan shroud. Refer to FAN SHROUD .

-- Remove the turbocharger. Refer to TURBOCHARGER .

WARNING:

Risk of injury from fuel.

To reduce fuel pressure, lay cloths around connecting point before opening fuel system and carefully loosen.

CAUTION:

Follow the guidelines for cleanliness when working on the fuel supply system. Refer to CLEAN WORKING CONDITIONS .

-- Remove the protective boot -2- and disconnect the fuel hose by pressing the release ring.

Fig 2: Locating Fuel Supply Line

Courtesy of AUDI OF AMERICA, LLC

-- Remove the hose -1-.

-- Release the EVAP canister -B arrow-, remove it upward -A arrow- and lay it aside.

-- Remove the bolt and nut -arrows- and then push the front right coolant pipe to the side with the coolant hoses still connected.

Fig 3: Locating Coolant Pipes

Courtesy of AUDI OF AMERICA, LLC

-- Remove the double bolt -arrow- for the oil dipstick guide tube.

Fig 4: Identifying Oil Dipstick Guide Tube - Tightening Specifications

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -3-.

Fig 5: Identifying Bolt And Hose, Removal

Courtesy of AUDI OF AMERICA, LLC

-- Remove bolt -arrow-.

-- Remove the hose -2-.

-- Loosen the hose clamp -1- and then remove the turbocharger recirculating valve -N249- with the hose still connected -4- from the air guide pipe and lay it to the side.

-- Disconnect the connector -arrow- on the charge air pressure sensor -G31-.

Fig 6: Identifying Air Guide Hose Bolts, Air Guide Pipe Hose Clamps & Electrical Harness Connector

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolt -1- and nut -4-.

-- Loosen the hose clamp -2- and remove the air guide pipe.

NOTE:

Ignore -3-.

-- Disconnect the connector -1- on the Intake Air Temperature (IAT) Sensor 2 -G299-.

Fig 7: Disconnecting Connector Intake Air Temperature (IAT) Sensor

Courtesy of AUDI OF AMERICA, LLC

NOTE:

Ignore -arrow-.

-- Disconnect the connector -1-.

Fig 8: Identifying Throttle Valve Control Module Electrical Connector And Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Remove bolts -arrows- and remove throttle valve control module -J338-.

-- Remove the nut -2- and screw -1- and remove the intake manifold support.

Fig 9: Identifying Intake Manifold Support, Removal

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors on the low fuel pressure sensor -G410- -1- and on the fuel pressure regulator valve -N276- -2-.

Fig 10: Disconnecting Connectors

Courtesy of AUDI OF AMERICA, LLC

-- Free up electrical wires.

NOTE:

Ignore -arrows-.

-- Remove the crankcase ventilation hose -1- from the oil separator by pressing the release buttons.

Fig 11: Identifying Crankcase Ventilation Hose, Removal

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connectors:

2 - For the injector valves, remove the connectors from the bracket

3 - For evaporative emission (EVAP) canister purge regulator valve 1 -N80-

4 - Intake flap motor -V157-

5 - Fuel pressure sensor -G247- and camshaft position sensor -G40-, remove the connectors from the bracket

-- Disconnect the connector -1-.

Fig 12: Identifying Camshaft Adjustment Valve 1 Connector, Wiring Harness & Bolts

Courtesy of AUDI OF AMERICA, LLC

-- Remove the wiring harness -2- from the bracket.

NOTE:

Ignore -3-.

-- Free up the wiring harness -arrows- and remove the bracket bolt -1-.

Fig 13: Identifying Engine Coolant Temperature Sensor -G62- -1-

Courtesy of AUDI OF AMERICA, LLC

-- Remove ground (GND) wire -1-.

Fig 14: Identifying Ground (GND) Wire & Connector

Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -2-.

-- Remove the coolant hoses and the vacuum hoses -arrows-.

-- Toothed belt, removing. Refer to TOOTHED BELT .

-- Remove cylinder head cover. Refer to CYLINDER HEAD COVER .