engine AUDI A4 1998 B5 / 1.G AWM Engine Cylinder Head Remove And Install Workshop Manual

15-9

Intake manifold, removing and installing


Removing

- Observe or obtain radio anti-theft code on
vehicles with coded radio.

- Disconnect Ground strap at battery with ignition
switched off.

- Remove engine cover -arrows-.
- Drain coolant Page 19
-4 .

- Disconnect coolant hoses -1- and -3-.
- Unbolt coolant expansion tank -2- (-arrows-).
- Disconnect electrical wiring to coolant level display switch -F66- on
bottom of expansion tank.
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15-11


- Disconnect connector for Camshaft Position sensor -arrow-.

Note:
Carefully protect the removed injectors from contamination. - Remove retaining bolts for fuel manifold and disconnect vacuum line
from fuel pressure regulator -arrows-.
- Remove fuel manifold together with injectors from intake manifold and
place it on a clean cloth at back of engine compartment.
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15-14

- Actuate all power window switches again for at
least one second in the "close" direction to
activate automatic open/close function.

- Set clock to correct time.

- Perform throttle-valve control module
adaption:

Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Fuel
Injection & Ignition, Engine Code(s): AWM , Repair Group 24


Tightening torques

Component

Nm
Intake manifold to cylinder head 10
Support for intake
manifold to intake
manifold 20
to bracket 20
Fuel manifold to intake manifold 10
Coolant line to coolant flange 10
Coolant line on intake line 10
Hose clamps for coolant hoses
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15-15

Cylinder head cover, removing and
installing


Removing

- Remove engine cover -arrows-.

- Remove air filter cover -arrow-.
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15-16


- Remove bolts -arrows-.
- Remove air ducts -1- and -2-.

- Remove line of crankcase vent -1-.
- Disconnect hose of crankcase venting from cylinder head cover.
- Remove line -1- from combination valve for secondary air inlet on
cylinder head cover and from heat shield -3- (engine code ANB only).
- Slightly swivel secondary air inlet line to side.
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15-21

Procedure

Engine in vehicle
Lock carrier must be in service position
Page 13
-1 .

Note:
All cable ties which are released or cut open
when removing must be located in the same
position when installing.

- Observe or obtain radio anti-theft code on
vehicles with coded radio.

- Disconnect Ground strap at battery with ignition
switched off.

- Drain coolant Page 19
-4 .

- Remove intake line Page 15
-9 .

- Remove ribbed belt and tensioner for ribbed belt
Page 13
-18
.

- Remove air filter cover -arrow-.
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15-23


- Remove line of crankcase vent -1-.
- Remove hose of crankcase venting from cylinder head cover.
- Remove line -1- from combination valve for secondary air inlet on
cylinder head cover and from heat shield -3- (engine code ANB only).
- Slightly swivel secondary air inlet line to side.
- Remove heat shield.

- Remove bolts -1- and -2- of oil feed line.
- Remove bolts -3- for exhaust turbocharger.
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ylinder head, removin
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Injection & Ignition, Engine Code(s): AWM , Repair Group 24

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15-34

Test conditions:

Engine oil temperature at least 30 C

Battery voltage at least 12.7 V

Test sequence

- Remove engine cover -arrows-.
- Switch ignition off.

- Disconnect connectors -3-.
- Remove ignition coils -1-.
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15-36

- Install spark plugs and ignition coils.

Note:
Replace gaskets for ignition coils if damaged.

- Check Diagnostic Trouble Code (DTC)
memory:

Repair Manual, 1.8 Liter 4
-Cyl. 5V Turbo Fuel
Injection & Ignition, Engine Code(s): AWM , Repair Group 01


Note:
DTCs will have been recorded in the DTC
memory because the connectors have been
unplugged. Check and, if necessary, erase the
DTC memory after completing the test.

Tightening torques

Component
Nm
Spark plugs in cylinder head 30
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