Assembly overview - lower part of intake manifold with fuel rail — VW
Assembly overview - lower part of intake manifold with fuel rail on VW: factory workshop procedure for engines CAVA, CAVD, CAXA, CGEA.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Assembly overview - lower part of intake manifold with fuel rail
Lower part of intake manifold, cylinder bank 1
Lower part of intake manifold, cylinder bank 2
Anchor
Bolts
0.3 Nm
Bracket
For lower part of intake manifold and fuel rail
Radial compensation element
Renew if damaged
Clip onto support ring
Item
O-ring
Renew
Lubricate with clean engine oil
Spacer ring
Renew if damaged
Injector
Removing and installing
Chapter
Combustion chamber seal
Do not treat ring with grease or other lubricant
Renewing
Chapter
.
Support ring
Renew
Fuel rail exerts force which secures injector in cylinder head via this support ring
Fuel rail
Removing and installing
Chapter
Fuel pressure sender
G247
Oil sealing taper
25 Nm
Lower part of intake manifold
Removing and installing
Chapter
Lower part of intake manifold, cylinder bank 2
Bracket
Gasket
Renew
Sleeve
Lower part of intake manifold
When installing the lower part of intake manifold, the intake manifold flaps must be set to operating position (intake manifold duct fully open)
Removing and installing
Chapter
9 Nm
Support ring
Renew if damaged
Ensure it is properly seated when installing
O-ring
Renew
Lubricate with clean engine oil
Spacer ring
Renew if damaged
Injector
With support ring
Removing and installing
Chapter
Combustion chamber seal
Do not treat ring with grease or other lubricant
Renew
Operating lever
For vacuum unit
Seal
Renew if damaged
When renewing lever out with screwdriver
Press in by hand
Vacuum hose
From
intake manifold flap valve
N316
Vacuum unit for intake manifold flap control
Intake manifold flap potentiometer 2
G512
Bolts
2.5 Nm
Threaded connection
40 Nm
Housing
For oil spray jet valve and oil non-return valve
Vacuum reservoir
High-pressure fuel line
Tighten union nuts to 25 Nm.
Bolts
9 Nm
Fuel rail
Bolts
9 Nm
Bolts
Specified torque and tightening sequence
Fig.
Bolts
0.3 Nm
Intake manifold lower part - specified torque and sequence
Tighten bolts
arrows
for lower part of intake manifold in stages and in diagonal sequence.
9 Nm
TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.
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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
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.