Removing and installing high-pressure pump (engine codes CARA, CEXA und CEXB) — VW

🧭 Before you start

Fits: VW Phaeton (3D)

• Renewed: seals

Don't miss

• Risk of irreparable damage to high-pressure pump if allowed to run dry.The high-pressure pump must first be filled with fuel before the engine is started. — Install toothed belt for high-pressure pump .
• Bleed fuel system after installing high-pressure pump Fuel supply system - diesel engines20.

🔧 Engine codes this applies to

📋 Procedure

1. Remove intake manifold upper part .
2. Removing toothed belt for high-pressure pump .
3. Unscrew bolts (arrows) and detach guard for high-pressure line.
4. Unscrew union nuts (1 … 4) and place high-pressure lines to one side.
5. Disconnect electrical connector (3).

6. Remove fuel supply hose (1) and fuel return hose (2).
7. Unscrew bolts (arrows) and remove high-pressure pump. [Note: If the fuel pressure regulating valve N276 or the high-pressure pump have been changed, the learnt values for the regulating valve must be reset using the vehicle diagnosis testerin guided functions; Resetting learnt values for fuel pressure regulating valve.] [Note: Renew seals and gaskets.The fuel return line must not be kinked, damaged or blocked.]
8. ⚠ Risk of irreparable damage to high-pressure pump if allowed to run dry.The high-pressure pump must first be filled with fuel before the engine is started. — Install toothed belt for high-pressure pump .
9. Install high-pressure lines.
10. Install upper part of intake manifold .
11. Bleed fuel system after installing high-pressure pump Fuel supply system - diesel engines20.

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