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Thread: what is this hose?

  1. #1
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    what is this hose?

    Can anyone tell me what this hose in the pics is (arrowed)? I heard a loud hissing sound and found it was coming from this hose which connects to the cam cover. I turned the hose where it joins the cam cover and it came apart at the joint where it joins another short hose and a seal popped out which now I can't find.

    I'll have to buy a new seal. Also how do these two hoses connect and how does the hose disconnect from the cam cover? I've never seen connections like these before.
    Attached Thumbnails Attached Thumbnails what is this hose?-cam-cover-1-arrows-jpg   what is this hose?-vacuum-hose-2-arrows-jpg  


  2. #2
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    I've done some more searching and it looks like its a crankcase ventilation pipe but I still have no idea how to remove it.

  3. #3
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    You squeeze the ends, and they come off.
    '07 Transporter 1.9 TDI
    '01 Beetle 2.0

  4. #4
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    I'll see if i can get a pic when the mrs gets back from the shops.
    Also your oil cap is upside down, that really should be your priority.
    MK4 GTI - Sold
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  5. #5
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    Thank you Umai Naa!! - I understand now. Push the sides of the clamp in and pull the hose off. I also found this video which shows it:

    YouTube

    Oil cap orientation matters Justcruizn? Why?

  6. #6
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    Here it is
    what is this hose?-img20191212205716-jpg

    So you seem to be missing the joiner collar of the hose assembly.
    And while i was checking this tonight I found I have a crack in of of the hose nearby, some silicone tape will be in order for that I think.
    Last edited by JustCruisn; 13-12-2019 at 08:29 AM.
    MK4 GTI - Sold
    MK5 Jetta Turbo - Sold
    MK5 Jetta 2.Slow - Until it dies.

  7. #7
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    yes that collar is the bit that sprung out. I'll have a better look for it on the weekend. Does the orientation of the oil cap really matter?

  8. #8
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    Only if you have OCD.
    '07 Transporter 1.9 TDI
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  9. #9
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    Ha ha JustCruisn, very funny. Well just bought the new hose from the dealer (for $66 would you believe!!!) and installed it and all good now. As per pic there is no "collar" joining the two parts as it's a one-piece moulding, so basically the middle concertina part of the hose just broke and fell away. Thanks for your help.
    Attached Thumbnails Attached Thumbnails what is this hose?-hose-new-vs-old-jpg  

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