Removing and installing fuel pressure regulating valve — VW

🧭 Before you start

Fits: VW Passat CC (357, 2008–2012), VW Passat B6 (3C, 2005–2010), VW Tiguan I (5N, 2007–2016), VW Golf VI (5K, 2008–2013); platform codes 1F7, 137, 521

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• Clean carefully; cleaning solvent must not enter the electrical connector.The fuel pressure regulating valve N276 cannot be re-used.
• Counterhold at housing hexagon and loosen union nut. Then unscrew and remove by hand.
• Seal off fuel rail bore immediately with a suitable plug to prevent dirt from entering.
• Counterhold at housing hexagon and tighten union nut. Specified torque

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ Follow the rules for all work on the fuel system .Observe rules for cleanliness .Follow these instructions before starting work and while working on the fuel system. — Remove engine cover panel .
2. Removing fuel rail .
3. Clean threaded area around regulating valve (e.g. with standard cleaning solution) before removing. Under no circumstances may dirt enter the hole of the fuel rail. [Note: Clean carefully; cleaning solvent must not enter the electrical connector.The fuel pressure regulating valve N276 cannot be re-used.]
4. Dry off fuel pressure regulating valve N276.
5. Disconnect electrical connector from fuel pressure regulating valve N276.

6. Counterhold at housing hexagon and loosen union nut. Then unscrew and remove by hand.
7. Extract dirt from fuel rail bore (threads and sealing surface). Do not use tools or other instruments for this purpose. [Note: Seal off fuel rail bore immediately with a suitable plug to prevent dirt from entering.] [Note: Check that sealing surfaces (deformable sealing lip) and threads on fuel pressure regulating valve N276 are undamaged.Also check sealing surface of fuel rail bore.Thread on fuel pressure regulating valve N276 must be free of oil and grease.]
8. Screw on union nut by hand.
9. Align fuel pressure regulating valve N276 so that connecting wire is free of mechanical tension after electrical connector is attached.
10. Counterhold at housing hexagon and tighten union nut. Specified torque
11. Install fuel rail .
12. Install high-pressure lines .
13. After installation, run engine at moderate speed for several minutes and then switch off.
14. Check fuel system for leaks.
15. Read event memory .
16. Then test drive the vehicle with at least one full acceleration. Check high pressure part of fuel system again for leaks.
17. Read event memory again .

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