Clean Injector Slot

Information 

• Always comply with the procedure described here. 
• Set compressed air supply to maximum 1 bar. 

1. > T40012 - Adapter-1-  with compressed air adapter -2-  must be screwed into the spark plug bore and tightened by hand.

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   Adapter in spark plug bore for compressed air connection

2. Set compressed air supply to max. 1 bar  and connect compressed air hose -2-  to adapter -1-  .

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   Compressed air connection or adapter in spark plug thread

3. Keep turning the crankshaft using the vibration damper until the valves on the relevant cylinder are closed.

   You will hear a distinct change or the noise! 

4. Remove sealing ring -1-  on the injector -2-  at the top using a plastic wedge -3-  .

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   Sealing ring on injector, top

5. Cover the injector opening at the top with an adhesive strip to prevent dirt from getting in.

   Information 

   • Compressed air will escape through the bore on the injector valve when pulling off the injector valve. 
   • This will blow out any dirt particles. Wear protective goggles! 
6. Pull off the injector -1-  .

   Wear protective goggles! 

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   Pulling off injector (view of V8 engine)

   1. 6.1  Pull spacer ring -3-  up with your hand.
   2. 6.2 For V6 engines:  > T10133/19 - Puller  must be positioned, then pull off injector using puller -4-  from > T10133C - Tool  set.
   3. 6.3 For V8 engines:  > T90005 - Puller  must be positioned so that the spacer ring -3-  is in the cut-out. Then, pull off injector using impact puller -4-  from > T10133C - Tool set  .
7. Disconnect compressed air hose on the adapter.
8. Close off the injector bore using a stopper -1-  from > T90006 - cleaning tool  .

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   Closing off injector bore

   1. 8.1  Screw stopper -1-  onto the pull hook -2-  and use it to close off the injector bore.

      The conical shape of the stopper holds it in the bore. 

9. Carefully clean the injector slot using a brush -1-  from > T90006 - cleaning tool  .

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   Injector slot with brush

   1. 9.1  Blow out residual dirt using compressed air or by suction.
10. Connect compressed air hose to the adapter for the spark plug thread.

    Observe maximum pressure of 1 bar! 

11. Pull stopper out of the injector bore using the pull hook and disconnect compressed air hose on the adapter.
12. > T40012 - Adapter  can now be unscrewed.
13. Pull off adhesive strip on the injector. Remove adhesive residue using a clean cloth soaked with fuel.
14. Carry out cleaning procedure according to instructions for all other injectors.