Procedures

Fuel System, Bleeding

Special tools, testers and auxiliary items required

• Hose clamps up to 25 mm dia. (3094)

• Remote control connection (V.A.G 1348/3A)

• Diesel extractor (VAS 5226)

• Adapter (V.A.G 1318/20)

• Adapter (V.A.G 1318/20-1)

• Adapter cable (V.A.G 1348/3-3)

Requirements

• Battery voltage must be at least 11.5 V.

• Fuel pump relays - 1 - and - 2 - for left and right fuel delivery units must be removed from their sockets.





Procedure

- Read safety precautions before beginning work --> [ Safety Precautions ] Safety Precautions.

- Remove cover in front of fuse holder.

- Connect remote control (V.A.G 1348/3A) with adapter cable (V.A.G 1348/3-3) to connection - arrow - for fuel pump relay for right fuel delivery unit.





- Connect positive clamp of remote control to positive terminal in engine compartment.

- Screw adapter (V.A.G 1318/20-1) on to adapter (V.A.G 1318/20).





- Turn valve on T-piece - arrow - counterclockwise until completely open.

CAUTION!
Fuel supply lines are under pressure! Before opening fuel system, connect diesel extractor (VAS 5226) and release pressure.

- Remove breather valve.

- Connect adapter (V.A.G 1318/20) with adapter (V.A.G 1318/20-1) and diesel extractor (VAS 5226) to bleed valve - 1 -.





- Turn valve (on T-piece) clockwise into bleed valve to stop.

- Check adapter and hose connection for leaks.

- Operate remote control (V.A.G 1348/3A) until fuel flows (free of air bubbles) from bleed valve.

- Turn valve on T-piece - arrow - counterclockwise until completely open again.





- Clamp off hose from suction pump (VAS 5226) (e.g. with hose clamps (3094)) and pull hose off from adapter (V.A.G 1318/20-1).

- Unscrew adapter (V.A.G 1318/20) from bleeder valve.

- Install cover onto bleed valve.