Diesel engine
Caution: Diesel fuel that has come into contact with rubber parts, such as cooling system hoses, must be wiped off immediately, otherwise these parts will deteriorate over time.
Warning: Diesel fuel should never be simply poured onto the ground or thrown away with household waste. District and city administrations should provide information on the location of the nearest special waste collection points.
Necessary tool:
- A suitable container for draining the remaining water.
- Fuel-resistant auxiliary hose for draining settled water.
Necessary consumables:
- O-ring seal for control valve.
Removal water

(The original text is available on the website vwmanual.ru)
- Release clamp "3" and remove regulating valve "4" together with attached fuel hoses. 1,2 — fuel hoses, arrows show the location of the fastening brackets.

- Place an auxiliary hose to drain the settled water onto the connecting nipple of the drain plug "arrow".
- Release the drain plug and drain approximately 0.1 liters of liquid from the filter. This is approximately the volume of a cup of coffee.
- Tighten the drain plug and disconnect the auxiliary hose.
- Install a new O-ring to seal the control valve.
- Insert the adjustment valve "4" and secure it with clamp "3".
- Start the engine and let it idle. Make sure the fuel lines and fuel supply system connectors are tight.
- Press the accelerator pedal several times to remove air from the fuel system.

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