Assembly overview - intake manifold (engine codes BLF, BLN, BLP) — VW
Assembly overview - intake manifold (engine codes BLF, BLN, BLP) on VW: factory workshop procedure for engines BLF, BLN, BLP.
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 - intake manifold (engine codes BLF, BLN, BLP)
WARNING
Observe safety precautions when releasing fuel pressure in high-pressure section
Chapter
Note
From model year 2006 the
fuel pressure sender for low-pressure
G410
has been discontinued.
Supply line
Secure with spring-type clips.
Check for secure seating.
From fuel filter.
T piece
Fuel line
Pipe/hose
Throttle valve module
J338
Clean
Chapter
.
If renewed, erase learnt values and adapt engine control unit
Vehicle diagnostic tester
“Guided functions”
.
10 Nm
From activated charcoal filter
Activated charcoal filter solenoid valve 1
N80
Seal
Renew.
Press in onto stop
From
activated charcoal filter system solenoid valve 1
N80
Intake manifold
Checking vacuum reservoir in intake manifold
Chapter
.
8 Nm
5 Nm
Connecting pipe
For exhaust gas recirculation system.
Fuel pressure sender
G247
, 20 Nm
Observe safety precautions when releasing fuel pressure in high-pressure section
Chapter
Union nut, 30 Nm
8 Nm
High-pressure line
Observe safety precautions when releasing fuel pressure in high-pressure section
Chapter
Union nut, 25 Nm
Intake manifold lower part
When a new intake manifold lower part is fitted, the spacing sleeve for the injector is omitted
Observe safety precautions when releasing fuel pressure in high-pressure section
Chapter
Caution
When installing lower part of intake manifold, ensure intake manifold flaps are not damaged.
Erase learnt values and adapt
intake manifold flap potentiometer
G336
to engine control unit
Vehicle diagnostic tester
“Guided functions”
.
Before removing and installing, lock vacuum positioning element using a 2.5 mm drill bit.
After installing a new fuel rail, remove retaining clip for vacuum positioning element.
After installing, check function of intake manifold flap using
hand vacuum pump
VAS 6213
Chapter
.
Gasket
Renew.
Note installation position.
Intake manifold flap potentiometer
G336
If renewed, erase learnt values and adapt engine control unit
Vehicle diagnostic tester
“Guided functions”
.
1.5 Nm
Vacuum actuator
For intake manifold flap
Check
Chapter
.
2.2 Nm
20 Nm
O-ring
Renew.
Intake manifold pressure sender
G71
5 Nm
Intake manifold flap air flow control valve
N316
Vacuum hose
To vacuum positioning element
Vacuum hose
From intake manifold
Return hose
From fuel rail.
Secure with spring-type clips.
Check for secure seating.
20 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.