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Thread: Un-block your Avant rear washer jet

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  1. Re: Un-block your Avant rear washer jet 
    #11
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    At last - the solution to my problem! Thank you so much. I would just add that I had to get the garage mechanic to take off the plastic cache as it was too tough for me.

    RDK

    Quote Originally Posted by toff View Post
    Hi,

    What a difference it makes to have a fully functional rear wash-wiper at last! (especially with the roads being so salty in this cold weather!)

    I thought my rear wash-wipe pump had packed in; I didn't get so much as a trickle from the rear wash jets. Having taken the nozzle off (as described below) and activated the rear-wash, the jet of water cleared my 6ft garden fence!!! So.. my rear washer jets were 100% blocked!


    1. Pull-off the plastic cowling that covers the washer jet. You need to spread the flaps that straddle each side of the wiper arm - the cowling should un-clip with a little persuasion.


    2. Pull-off the washer jet nozzle - it's just a push fit (it may need wiggling as it'll have several years of crud holding it on!)




    3. Take the nozzle inside and submerse it in vinegar in a small dish. Put the dish in the microwave for 10 seconds - NOT LONGER (the jets are metal - so do it at your own risk!) This is intended to speed-up the reaction between the acid (in the vinegar) and the calcium / oxide deposits in the jets.

    Leave the nozzle to soak for 30 mins or so.


    4. Get a twist-tie - importantly, you need the type that you'll find holding cables together when you buy an electronic appliance gadget etc, (the ones you get in sandwich bags are not rigid enough).



    Strip a bit of sheath from the twist-tie to expose some bare wire. Gently prod, poke & twist the wire in each of the jets. If the crud won't shift, repeat step 3 and try prodding & poking again later! Providing your twist-tie wire isn't too big to fit in the jet, it will eventually work the crud loose.



    Once you're able to "rod" the jets with the twist-tie, give both of them a vigorous roding and put them back in the vinegar for another 10 mins or so. For best results, suck or blow some vinegar through the jets (not very pleasant!)

    Finish off by using a pin to rod the jets out even more. I covered the pin in some citrus gel (just like vinegar, the acid breaks down the crud) and wiped the crud off the pin each time it came out of the jet, until no more came out.





    5. Use some tightly-screwed-up kitchen roll to de-gunge the main cavity of the nozzle, repeat until no more gunge comes out.

    Do the same for the pipe that the nozzel clips-onto (on the car) and activate the rear-wash wiper to blast out any crud in the pipe. Try to do this as the postman walks past for extra points


    6. Clip the nozzel back on and replace the plastic cowling!


    If you've found the above useful, please show your appreciation by clicking on the button in the bottom-right hand corner of this post.

    Al.
     
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  2. Re: Un-block your Avant rear washer jet 
    #12
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    Worked a treat on my A3. Thank you so much!
     
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  3. Re: Un-block your Avant rear washer jet 
    #13
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    Just done this to my wifes car thanks you for the writeup very helpful

    worked like a charm
     
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  4. Re: Un-block your Avant rear washer jet 
    #14
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    I am going to give this a try and see if it works for me too!! Thanks for the write up, even an idiot like me can follow your instructions. Much appreciated. Cheers.
     
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  5. Re: Un-block your Avant rear washer jet 
    #15
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    Excellent help, having just bought an 07 A6 Avant Le Mans I found the rear washer not working and wondered if it was due to the common pipe problem.....turns out to be the grunge in the line/jets.....all sorted!

    thanks
     
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  6. Re: Un-block your Avant rear washer jet 
    #16
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    Thought my electric motor had gone or the pipe had become disconnected, but saw this, removed the nozzle as described and I was able to hit the postman! So then it was just a case of getting the vinegar and twist tie out and now everything is working good as new.
    Many thanks - a good few quid saved and priceless satisfaction at having done it myself!
     
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  7. Re: Un-block your Avant rear washer jet 
    #17
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    Still after 6 years a very useful and money saving post, not to mention dead easy....
    Many thanks
     
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  8. Re: Un-block your Avant rear washer jet 
    #18
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    Thank you for your great procedure, it worked a threat.
     
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  9. Re: Un-block your Avant rear washer jet 
    #19
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    Just wanted to say thanks for a great post - still useful even 11 years later!
     
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