Exploded view - intake manifold (bottom section), fuel rail and injectors — AUDI
Exploded view - intake manifold (bottom section), fuel rail and injectors on Audi: factory workshop procedure for engines CFSA.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
🔧 Engine codes this applies to
📐 1 workshop diagram for CFSA
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Exploded view - intake manifold (bottom section), fuel rail and injectors
Seals
Renew
Intake manifold (bottom section)
Removing and installing (see the separate procedure)
Seal
Renew if damaged
When renewing lever out with screwdriver
Press in by hand
Bolt
2.5 Nm
Intake manifold flap potentiometer
Cylinder bank 1 (right-side):
intake manifold flap potentiometer
G336
Cylinder bank 2 (left-side):
intake manifold flap potentiometer 2
G512
Before removing, remove intake manifold (top section)
Adaption must be performed after this component has been renewed; use a
Vehicle diagnostic tester
Bolt
2.5 Nm
Vacuum unit
For intake manifold flaps
After renewing, check vacuum system for leaks (see the separate procedure)
Screw plug
25 Nm
Fuel rail
Removing and installing (see “Removing and installing injectors”) (see the separate procedure)
Sleeve
Retaining clip
For fuel rail
Bolt
Tightening torque and sequence
Fig.
High-pressure pipe
WARNING
The fuel system operates at extremely high pressure. This can cause injury.
The pressure in the high-pressure section of the injection system must be reduced to a residual pressure prior to opening the system.
Reducing fuel pressure in high-pressure section of injection system (see the separate procedure)
Connections must not be damaged
Do not alter shape
Removing and installing (see “Removing and installing high-pressure pipe”)
Lubricate thread lightly with engine oil
25 Nm
Bolt
9 Nm
Bolt
2.5 Nm
Union nut
Lubricate thread lightly with engine oil
25 Nm
Seals
Renew
Support ring
Renew
Via this support ring, the fuel rail exerts the clamping force that holds the injector in the cylinder head
O-ring
Renew
Lubricate lightly with clean engine oil
Spacer ring
Renew if damaged
Injector
Removing and installing (see the separate procedure)
Sealing element
Renew
Combustion chamber ring seal
Renew
Do not apply grease or use any other lubricants
Intake manifold (bottom section) - tightening torque and sequence
Tighten bolts (arrows) in stages and in diagonal sequence; final torque 9 Nm.
Fuel pressure sender
G247
/
G624
At front of fuel rail
Cylinder bank 1 (right-side):
fuel pressure sender
G247 (arrow)
Cylinder bank 2 (left-side):
fuel pressure sender 2
G624
Removing and installing (see the separate procedure)
25 Nm
Fuel pressure sender for low pressure
G410
Behind oil filter housing (arrow)
15 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.
Ask about my car →Other AUDI procedures
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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 → · How these pages are made →Workshop data on this page last updated 20 Sep 2026.