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Removing and installing high-pressure lines > < Removing injectors

Golf Mk6

Installing injectors
Installing injectors
Important instructions for installing injectors
l  When removing and installing or replacing an injector, always renew the following components and seals/O-rings: „clamping piece“, „copper seal“, „O-ring for injector bore“ and „O-ring for injector return connection“.
l  Used injectors may only be re-installed on the same cylinder.
l  Make sure that the injectors and the installation area are clean before installing.
l  The injectors must be completely undamaged.
l  Lubricate all O-rings with engine oil or assembly oil before installing.
If a used injector is being re-installed:
–  Spray tip of injector nozzle with rust-releasing spray. Wait approx. 5 minutes and wipe off soot particles and oil with a cloth.
–  To remove the old copper seal from the injector, clamp the seal carefully in a vice so that it is just held between the jaws without turning. Then carefully pull and twist the injector out of the copper seal by hand.
–  Use a plastic bush to fit the new copper seal.
–  Carefully slide new O-ring over fuel return connection.
–  To remove carbon deposits from the injector sealing surface, clean the injector seat in the cylinder head with a cloth soaked in engine oil or rust solvent. Take care not to damage the sealing surface.
   
–  Renew O-ring for injector bore using assembly sleeve -T10377-.
–  Fit injector cover.
–  Slide clamping piece onto injector and note its installation position → Fig..
–  Insert injector into injector bore.
  Caution
When removing securing nuts from injector there is a risk that the relevant nut will fall into the cylinder head. Proceed very carefully to prevent unnecessary dismantling or further damage.
–  Carefully position securing nuts of clamping piece by hand and tighten. Specified torque → Item.
–  Turn injector cover onto installation position and bolt. Specified torque → Item.
–  Install high-pressure lines → Chapter.
  Note
After renewing one or more injectors, the „injector delivery calibration values“ and „injector voltage calibration values“ for the new injectors must be entered in the engine control unit → Vehicle diagnostic tester.
  N23-10230

Removing and installing high-pressure lines > < Removing injectors