Removing and installing gas pressure regulator, Passat — VW
Removing and installing gas pressure regulator, Passat on VW: 17 steps, engines CDGA. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: VW Touran I (1T, 2003–2015), VW Passat B6 (3C, 2005–2010), VW Passat B7 saloon (362, 2010–2014), VW Passat B7 Variant (365, 2010–2014)
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- Risk of scalding! Allow engine to cool before pulling off coolant hoses. — Unbolt low-pressure line (4) and high-pressure line (3) from gas pressure regulator (counterhold on union with an open-end wrench).
🔧 Engine codes this applies to
📐 41 workshop diagrams for CDGA
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
- Observe safety precautions .
- Observe rules for cleanliness .
- Observe safety precautions when working on natural gas system .
- ⚠ Release pressure in the system before working on the natural gas system. — Release pressure in high-pressure line Fuel supply system – natural gas engines20Fuel tanks; Releasing pressure in high-pressure line.
- Detach exhaust hanger (1), and loosen clamp (2).
- Remove exhaust pipe.
- Remove protective covers on underbody Fuel supply system – natural gas engines20Fuel tank; Assembly overview - protective covers.
- Close mechanical shut-off valves (1) and (2) using handwheel T50026.
- Close mechanical shut-off valve (1) using handwheel T50026.
- Release and unplug connectors (1).
- Open clamps, and pull off coolant hoses.
- Clamp off coolant hoses (2) with hose clips up to 25 mm3094.
- ⚠ Risk of scalding! Allow engine to cool before pulling off coolant hoses. — Unbolt low-pressure line (4) and high-pressure line (3) from gas pressure regulator (counterhold on union with an open-end wrench).
- Immediately seal open connections with suitable plugs from engine bung setVAS 6122.
- Unscrew securing bolts and nuts (arrows) from bracket.
- ⚠ Observe screw fixture regulations for newly installed fuel lines (initial installation) The screw fixture regulations only apply to fuel lines that were not already installed! — Observe test prerequisites 00Gas system test; Test prerequisites for gas systems.
- Perform gas system test 35.1Description of work; Performing visual inspection of natural gas tanks for corrosion and leakage test.
Ask TorqFix about your VW CDGA — it answers with the exact sequence for that engine and the workshop drawing for each step. First question is free after a 20-second sign-up, no card.
Ask about your VW CDGA — free → or sign up free to see the drawingsOther VW 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 →Workshop data on this page last updated 20 Sep 2026.