Dismantling and assembling intake manifold upper part and intake manifold lower part — VW

Dismantling and assembling intake manifold upper part and intake manifold lower part on VW: factory workshop procedure for engines AGZ.

Workshop procedure for VW — the factory write-up, straight from real workshop data.

factory workshop text 1 engine code engine codes merged from 2 documented variants

🔧 Engine codes this applies to

AGZ

📐 26 workshop diagrams for AGZ

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 1

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 2

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 3

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 4

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 5

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 6

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 7

Dismantling and assembling intake manifold upper part and intake manifold lower part — AGZ · diagram 8

+ 18 more diagrams

🔒 26 workshop diagrams for this job Ask about your VW AGZ — free or sign up free to see the drawings

📋 Procedure

ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.

10 Nm
Gasket
Renew

O ring
Renew if damaged
Lightly oil before installing

Bearing cap
For intake manifold change-over barrel

10 Nm
Intake manifold upper part
Removing and installing:

=> Repair group 15; Removing and installing cylinder head; Removing and installing cylinder head cover
Motronic injection and ignition system (5-cyl.)
Removing and installing cylinder head
Removing and installing cylinder head cover

Intake manifold temperature sender (G72)*, 15 Nm
Checking => Page
24-69

Support bracket
For accelerator cable
Adjusting accelerator cable

=> Repair group 20; Removing and installing parts of fuel supply system; Servicing accelerator mechanism
Motronic injection and ignition system (5-cyl.)
Removing and installing parts of fuel supply system
Servicing accelerator mechanism

Connection
To junction piece for intake manifold change-over and fuel pressure regulator

Connection
For hose from activated charcoal filter solenoid valve 1 (N80)

25 Nm

Throttle valve control part (J338)*
Components of the throttle valve control part (J338):
Throttle valve positioner (V60), throttle valve potentiometer (G88), throttle valve potentiometer (G69) and idling switch (F60)
Heated by coolant
Checking => Page
24-52
If the throttle valve control part is replaced perform basic setting
=> Page
24-106

Intake manifold - lower part
Connection
To intake hose =>
Page
24-6
item
4

Injector (N30...N33, N83)*/**
Removing and installing
=> Page
24-21
Checking => Page
24-80

Retaining clip
Check seated securely

Connector
For injectors (N30...N33, N83)

T piece
To connection item
9

Fuel pressure regulator
With fuel rail
Checking => Page
24-92

Non-return valve
Black valve side faces intake manifold

Vacuum reservoir
For intake manifold change-over
Secured in wheel housing, front left

Vacuum positioning element
For intake manifold change-over
Check => Page
24-95

Positioning lever
For change-over barrel
Check securely seated

Intake manifold change-over valve (N156)*/**
Change-over barrel
Cover

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Other VW procedures

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

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Workshop data on this page last updated 20 Sep 2026.