Diesel injection system

Bleeding the fuel system

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010203040502518N·mlb·ft
Tightening torque found on this page
55/74 kW engine (75/100 hp) up to 9/98

Even if the tank has been run completely empty or if parts of the fuel system have been replaced, the system generally does not need to be bled, as it bleeds itself automatically while cranking the engine.

If the fuel system does not bleed itself automatically, proceed as follows:

  • When working on the injection system, observe the cleanliness instructions, see page 94.

Note: make sure no diesel fuel runs onto the coolant hoses. If necessary, the hoses must be cleaned immediately.
  • Bleed the fuel filter, see page 300.

Kraftstoffanlage entlüften

  • While cranking the engine with the starter, loosen all injection lines at the injection nozzles one after another and retighten them to 25 N·m once fuel has escaped.

  • Wipe off escaped fuel with a damp cloth.

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