Renewing paper filter on vaporiser: VW Polo 6R (CNKA)

🧭 Before you start

Fits: VW Polo 6R (2009–2014)

• Renewed: if necessary

Don't miss

• Switching (1) to gas mode is briefly displayed in dash panel insertK.
• It is forbidden to empty Autogas tanks indoors!There is a danger of explosion and injury!Always empty fuel tanks outdoors! — Switch vehicle diagnosis tester on.
• Read and observe safety information displayed!
• Connector remains connected.
• Do not damage seal of filter housing.

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ There is a danger from escaping gas.The system is pressurised.Wear suitable protection such as eye protection and protective gloves.Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection. — Release latch (1) and remove protective cover (2).
2. Start engine. [Note: Switching (1) to gas mode is briefly displayed in dash panel insertK.]
3. Connect diagnostic cable.
4. ⚠ It is forbidden to empty Autogas tanks indoors!There is a danger of explosion and injury!Always empty fuel tanks outdoors! — Switch vehicle diagnosis tester on.
5. Select "“Guided fault finding”" field on screen.

6. Press > field to confirm.
7. Select one after another:
8. Confirm vehicle identification
9. Select "“01 - Systems capable of self-diagnosis”"(arrow) and confirm with >.
10. Select "“01 - Engine management system”"(arrow) and confirm with >.
11. Select "“01 - Functions”"(arrow) and confirm with >.
12. Select "“Read pressure in gas rail”" function (arrow) and confirm with >. [Note: Read and observe safety information displayed!]
13. Confirm safety note with > field.
14. Undo nut (1) from gas tank valve N495(2) and pull valve off (in direction of arrow). [Note: Connector remains connected.]
15. Confirm > field.
16. The following functions can be selected with fields 1 to 3:
17. Stop engine.
18. Remove bolts (1 and 2).
19. Unscrew nut and bolt (3) and remove bracket for gas filter housing.
20. Release gas hose from vaporiser and lay to one side with filter.
21. Release and disconnect connector (2) from gas mode high-pressure valve N372(1).
22. ⚠ There is a danger from escaping gas.The system is pressurised.Wear suitable protection such as eye protection and protective gloves.Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection. — Loosen gas line union (arrow) with banjo bolt (1) on gas inlet of filter housing.
23. Loosen filter housing union (arrow) with gas mode high-pressure valve N372 and remove filter housing with gas mode high-pressure valve N372.
24. Using circlip pliers, remove circlip (arrow) from filter housing.
25. Remove filter housing cover and withdraw filter element upwards.
26. Check seal in filter housing for damage and renew if necessary.
27. Insert new paper filter.
28. Press filter housing cover into solenoid as far as stop and then secure with circlip. [Note: Do not damage seal of filter housing.]
29. Attach filter housing with gas mode high-pressure valve N372 to vaporiser (arrow). [Note: Ensure that you install gas mode high-pressure valve N372 in correct installation position.Connector of gas mode high-pressure valve N372 should be at »approx. 11 o'clock«(A).]
30. Attach gas line (1) with banjo bolt to gas inlet of filter housing.
31. Attach connector (2) to gas mode high-pressure valve N372(1).
32. Attach gas filter with bracket.
33. Fit valve for gas tank N495 in reverse order.
34. Fit protective cover (2) and engage latch (21).
35. Carry out a gas system test (GAP) once installation is complete 27.1.
36. Read fault memory using vehicle diagnostic tester and correct any faults according to repair guidelines.

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