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Thread: Touran oil filter housing cap wont come off

  1. #1
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    Touran oil filter housing cap wont come off

    I came to change the oil on my 2006 Touran 1.9 TDI last week but could not open the plastic oil filter screw cap. In the end I gave up and just changed the oil without changing the oil filter as it was in dire need of a change.

    Since then I have brought the correct socket to loosen the oil filter cap but it wont budge, it just strains as though it is about to crack. I went to halfords to get ripped off buying the specific wrench cup to remove the cap but still wont work, it feels as though it is welded on.

    I have been looking at various threads and ideas. I was thinking of buying a new cap for around 20 and trying to break off the cap that is stuck on. Any ideas on how to do this would be greatly appreciated. I don't want to end replacing the whole oil filter housing because of mistakenly damaging it. This current oil filter has been on at least 25,000 miles!

    Thanks for any suggestions.

  2. #2
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    Sometimes things like giving a stuck fastener a bang with a hammer in the axial direction can help free things up, as can trying to (counter-intuitively) tighten it a little more then trying to undo it have been known to work. Both of those tend to be with conventional metallic fasteners rather than a plastic/metal interface, but I don't see any harm in trying them.
    Buying a spare cap before getting too animal seems like a sound plan though.
    Have you tried loosening it in both hot and cold engine states?
    My car: 2003 Polo 1.4 BBY, Petrol
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  3. #3
    Administrator Crasher's Avatar
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    Sometimes they are so tight they break, we stock most of them because of this. On cars we have serviced we never get the problem as we torque them to the specified setting.
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  4. #4
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    Cheers Pete and crasher...

    I have only tried loosening it when it is hot/warm, crossed my mind to try when cold due to thermal expansion but not got around to it yet. I'll try and give it a go before trying the smashing it out and replacing routine.

    It has been over torqued I think, along with the wheel nuts which I needed to take to a garage to remove.... Previous owner clearly had issues.

    Thanks!

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  6. #5
    Administrator Keithuk's Avatar
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    First posts normally go in introductions else you could get a free fix and we never see you again!!!

    It depends who fitted the last one and didn't use a torque wrench. I always use 32mm single hex socket as the standard multi spline ones can round the plastic cap off if its to tight.
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


  7. #6
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    Was not aware of first post etiquette, cheers for the heads up.

    I tried removing the cap this morning when it was cold and it's still not budging... Ill look into getting the hex key socket that you mentioned, I don't fancy smashing up the cap and willing to try anything else first.

    Thanks again. J

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