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Removing and installing intake manifold - engine codes ANB, APU, ARK, ATW >
< Intake manifold - exploded view
A4 Mk1
Power unit
4-cylinder engine (1.8 ltr. 5-valve turbo), mechanics
Engine cylinder head, valve gear
Cylinder head
Removing and installing intake manifold - engine codes AEB, AJL
Removing and installing intake manifold - engine codes AEB, AJL
Removing and installing intake manifold - engine codes AEB, AJL
Removing
Note
Fit all cable ties in the original positions when installing.
Caution
To prevent damage to the electronic components when disconnecting the battery:
Observe notes on procedure for disconnecting the battery.
–
Disconnect earth wire
-arrow-
from battery terminal
→ Rep. Gr.27
.
–
Release quick-release fasteners and remove engine cover panel
-arrows-
.
–
Drain coolant
→ Chapter
.
–
Detach throttle cable from throttle valve module -J338- and from support bracket
-arrows-
(do not remove retainer).
–
Disconnect vacuum hoses
-1 ... 3-
.
Note
On vehicles with automatic gearbox, disconnect vacuum hose
-2-
behind suction-jet pump.
–
Unplug electrical connectors:
4 -
For intake air temperature sender -G42-
5 -
For throttle valve module -J338-
–
Detach air intake hose
-6-
.
–
Unplug electrical connector
-arrow-
at Hall sender -G40-.
–
Remove bolts for fuel rail and disconnect vacuum line from fuel pressure regulator
-arrows-
.
–
Pull fuel rail together with injectors off intake manifold and set it aside on a clean cloth in rear of engine compartment.
Note
Make sure the removed injectors do not become soiled.
–
Detach coolant hoses from top coolant pipe.
–
Unbolt top coolant pipe from intake manifold and from coolant flange on rear of cylinder head
-arrows-
.
–
Disconnect crankcase breather hose
-1-
from intake manifold.
–
Remove support for intake manifold
-arrows-
.
–
Pull out oil dipstick.
–
Unbolt intake manifold from cylinder head and remove.
Note
Block off intake ports in cylinder head with clean rags.
Installing
Installation is carried out in the reverse order; note the following:
Note
t
Renew gaskets and O-rings.
t
Hose connections and air pipes and hoses must be free of oil and grease before assembly.
t
Secure all hose connections with the correct type of hose clips (same as original equipment)
→ Electronic parts catalogue
.
–
Adjust throttle cable
→ Rep. Gr.20
.
–
Install coolant hoses and air hoses with screw-type clips
→ Fig.
.
–
Observe notes on procedure for connecting the battery
→ Rep. Gr.27
.
–
Fill up with coolant
→ Anchor
.
Tightening torques
→ Chapter
Power unit
4-cylinder engine (1.8 ltr. 5-valve turbo), mechanics
Engine cylinder head, valve gear
Cylinder head
Removing and installing intake manifold - engine codes AEB, AJL
Removing and installing intake manifold - engine codes ANB, APU, ARK, ATW >
< Intake manifold - exploded view