Removing and installing gas rail with gas injector N366/N367/N368/N369 — VW

🧭 Before you start

Fits: VW Golf VII Variant (BA), VW Golf VII (5G, 2012–2020)

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• Loosen union nut (1) of low-pressure line using an open-end spanner »16 mm«. At the same time, counterhold gas rail (2) with a spanner »15 mm«.
• Ensure that the gas injectors (4) are seated properly in gas rail (8).
• Natural gas system may not be operated until tested accordingly.The necessary scope of the leakage test depends on the pressure section which has been worked on.Observe the following allocation!

🔧 Engine codes this applies to

📋 Procedure

1. Remove air filter housing Removing and installing air filter housing.
2. Observe safety precautions when working on natural gas system Safety precautions when working on natural gas system.
3. Release pressure in high-pressure line Fuel supply system – natural gas engines20Fuel tanks; Releasing pressure in high-pressure line.
4. Loosen union nut (1) of low-pressure line using an open-end spanner »16 mm«. At the same time, counterhold gas rail (2) with a spanner »15 mm«.
5. Release retaining clips for wiring harness (arrows).

6. Pull connectors (1) off gas injectors "“-N366-, -N367-, -N368-, -N369 -”" and off gas rail temperature and pressure sensorGX21(2).
7. Unscrew bolts (1) from intake manifold.
8. Pull gas rail (8) with gas injectors (4) out of the intake manifold.
9. Carefully pull off retaining clip (7) of gas injector to be removed.
10. Pull gas injector out of gas rail.
11. Push gas rail with gas injectors carefully and evenly into intake manifold.
12. Ensure that the gas injectors (4) are seated properly in gas rail (8).
13. Tighten securing bolts (1) of gas rail to specified torque . [Note: Natural gas system may not be operated until tested accordingly.The necessary scope of the leakage test depends on the pressure section which has been worked on.Observe the following allocation!]
14. Open fuel tank shut-off valves N361/N362 using hand wheel T50026.
15. Check the gas system Checking gas system for leaks.

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