Removing and Installing Top Section of Intake Manifold

Removing and installing intake manifold (top section)

Removing

–	Lift off engine cover panel -1--arrows-.

–	Pull cover -1- off air duct (release clip on side).

–	Unclip air duct -2-.

–	Release hose clip -arrow- and detach air hose.

–	Loosen hose clip -2-.

–	Unplug electrical connector -3- at charge pressure sender -G31- / intake air temperature sender 2 -G299-.

Note

Disregard -item 1-.

–	Unplug electrical connectors:

1 -	Throttle valve module -J338-

2 -	Intake air temperature sender -G42- / intake manifold pressure sender -G71-

3 -	Turbocharger air recirculation valve -N249-

–	Disengage activated charcoal filter solenoid valve 1 -N80--item 1-.

–	Remove bolt -2-.

–	Release hose clip -3- and detach hose.

–	Press release tabs and disconnect crankcase breather hose -arrow-.

–	Unscrew nuts -1 ... 5- and detach intake manifold (top section).

Caution

Risk of irreparable damage to engine.

Block off the openings of the intake ports in the cylinder head with a clean cloth to prevent small items from dropping into the engine.

Installing

Installation is carried out in the reverse order; note the following:

l	Tightening torques → Chapter „Intake manifold (top section) - exploded view“, → Fig. „„Intake manifold (top section) - tightening torque and sequence““ and → Chapter „Air cleaner - exploded view“.

Note

t	Renew gasket and O-ring.

t	Hose connections and air pipes and hoses must be free of oil and grease before assembly.

t	Do not use any lubricants containing silicone when assembling.

t	Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.

t	To ensure that the air hoses can be properly secured at their connections, spray rust remover onto the worm thread of used hose clips before installing.

Audi A3 Workshop Service & Auto Repair Manuals