Removing and installing gas rail with gas injectors N366, N367, N368, N369 — VW

🧭 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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• Ensure that retaining clips are seated properly.
• On no account must the union nut be tightened further than specified, otherwise the special connection will be damaged and the pressure line must be renewed.Natural gas system may not be operated until tested accordingly.

🔧 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

1. ⚠ Make sure that the tank shut-off valve on each of the natural gas tanks is closed. — Empty gas system Fuel supply system – natural gas engines20Fuel tank; Releasing pressure in high-pressure line.
2. Lift engine cover panel at points (1) and pull it forwards in direction of (arrow).
3. Remove securing bolts (1).
4. Carefully loosen union nut (2) and allow residual gas to escape.
5. Detach spring-type clips and pull off hose (4) on activated charcoal filter system solenoid valve 1N80 and pressure pipe (5).

6. Unscrew securing bolt for pressure pipe (5) on turbocharger and pull pressure pipe off.
7. Pull off all connectors and hose connections on intake connecting pipe (3) and regulating flap control unit J808.
8. Unscrew intake connecting pipe securing bolts (arrows) and pull intake connecting pipe upwards with regulating flap control unit J808.
9. Pull connector (2) off gas rail sensor G401.
10. Pull connector (3) off gas injector and remove securing bolts (1).
11. Remove gas rail together with gas injectors.
12. Ensure that retaining clips are seated properly.
13. Position fuel rail with gas injectors on intake manifold and press it in evenly. [Note: On no account must the union nut be tightened further than specified, otherwise the special connection will be damaged and the pressure line must be renewed.Natural gas system may not be operated until tested accordingly.]
14. ⚠ Operating the natural gas system without having tested it for leaks according to specifications may result in severe injuries or death.The necessary scope of the leakage test depends on the pressure section which has been worked on.Note the following allocation! — Open fuel tank shut-off valves N361/N362/N363/N429 (depending on vehicle model and equipment level) using hand wheel T50026.
15. Check gas system Checking natural gas supply system for leaks

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