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  1. #1
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    Liquid Moly Diesel Purge - Injector Cleaner.


    As you can see in the photo above, you disconnect the fuel lines that come to and fro the fuel tank.
    Remove Fuse Number 28 to disable the intank fuel pump.

    Get some hose and put it on the inlet/outlet of the fuel filter and put the other end of the pipes into the tank of cleaning fluid.

    Start engine and run the engine at various rev ranges.
    Tanks about 30 mins to drink up 1 tin of the stuff.

    I had a problem where the engine work rock abit at 3k. Seems alot smoother now.
    So fingers crossed, as it mostly does it when cold.
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

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  3. #2
    2nd Gear

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    Where did you buy it mate?
    Audi Avant A4 54 1.9Tdi Quattro & Leon Cupra R 2005 1.8T remapped to 275bhp

  4. #3
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    I bought 2 tins on ebay for just over 9 quid.
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  5. #4
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    Cool just bought 2 tins to run through mine...why did you buy it? had issues with rough running?
    Audi Avant A4 54 1.9Tdi Quattro & Leon Cupra R 2005 1.8T remapped to 275bhp

  6. #5
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    Yeh, when it hits 3k, it's like someone rocks the engine and the engine note changes.
    Have a look online, there are alot of stuff on the net about it.
    If you're doing a pd engine, becareful the liquid coming back from the injectors is HOT!
    Atlas Grey A4 2.5 TDI Quattro Sport.
    Mods so far: Cruise control, DIS, Heated Mirrors, Tuning box, Xenonx, Centre Arm Rest, MFSW, RNS-E, SDS and Aero Wipers.
    To do: None yet.
    Next: Auto dip rearview mirror and Folding Mirrors.

  7. #6
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    Cheers mate. Also need to make sure the fuse is removed as its an AVF PD 130 engine

    Mechanic gonna do it next week for me.

    Ive got rough idle and lots of blueish smoke most mornings...
    Audi Avant A4 54 1.9Tdi Quattro & Leon Cupra R 2005 1.8T remapped to 275bhp

  8. #7
    S3 TRS's Avatar
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    Did this this afternoon. removed the no 28 fuse, connected pipes to the intake and return of the fuel filter and put them in a metal cocktail shaker. ( i wanted to see the level at all times of the Liqui moli diesel purge) as i wasnt quite sure how much it would use per minute for example.

    Really easy to do, well worth it. engine feels much smoother now. and im sure i could hear the engine sound change ever so slightly.

    the only thing that was a pain in the ass was the return pipe (8mm one) out of the filter. its a plastic connector and required much persuasion to get the original pipe off so i could attach the newer shorter one to the cocktail shaker containing the diesel purge.

    please be aware that the container and the pipes will get hot when you do this. i suggest also doing this when the engine is cold, so that you dont burn yourself on the engine or the fuel when a little spills out when you disconnect the pipe.

    i got myself the 1 litre version of Liqui Moli Diesel Purge, but 500ml would have also been sufficient. since my car has just over 124,000 miles on it, and not being sure on whether the injectors are original or even if they have been cleaned in the past, i thought id go with the 1litre the first time. i would probably just do 500ml from now on, possibly before a service.

    i was really quite hesitant about doing this at first, and not to mention the possibility of getting air into the fuel system, but its really easy,
    and i came across no problems. just make sure that you put plenty of kitchen roll around the fuel filter so you dont get diesel all over your engine bay when you disconnect/reconnect the fuel lines to the filter.


  9. #8
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    Nice work. How long did it take to all go through?

    I'm not too sure how your cocktails are going to taste now ....
    Ingolstance Read about my A6 HERE.

  10. #9
    S3 TRS's Avatar
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    i think it took around half an hour or so, not including setting up time. overall i think about an hour.
    Just had to keep topping it up with the diesel purge.

    it was an old one in storage. i couldn't really find anything else suitable so thats what i settled for!

 

 

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