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  1. #1
    Join Date
    Jun 2008
    Location
    Olympia, WA
    Posts
    9,365
    Car
    BMW 228i, VW Cabriolet

    Default Fuel Filter Replacement

    I'm coming up on 40K with my TDI, so I'm about due to for the first service I will pay for/handle myself (first 3 were included with the purchase). Looking back in my records, the dealer didn't change the fuel filter @ 20K, though it is supposed to be done then.

    Do you guys change your fuel filter yourself?

    If you do, do you have the software to prime the system? I have read that you can damage the HPFP without priming it, but then it seems there are plenty (dealers included), that don't even bother.

  2. #2
    Join Date
    Mar 2008
    Location
    N.E. Minneapolis
    Posts
    4,810
    Car
    GSW TDI 6spd, 74 Scout II

    Default

    I have taken my system apart and not primed it again. I also did not drain the filter housing at all. Just be sure to clean the entire area of sand and dust, not a fun place to make a little mistake.
    Go Green with Diesel.

  3. #3
    Join Date
    Mar 2009
    Location
    Lakeville, MN
    Posts
    1,261
    Car
    MKVII GSW TDI

    Default

    I've changed probably 6 or 7 fuel filters on my two TDI's. I used the VCDS prime method each time and it worked quite well. I have heard of people filling the filter housing with fuel and diesel clean. Either way seems to work, but VW recommends the software method only.

  4. #4
    Join Date
    May 2007
    Location
    WI, North of the 45th.
    Posts
    13,361
    Car
    S55, 330i, R53, JKU

    Default

    You should text Kroiss. He put a filter system on his tdi that uses the filter off a bulldozer or some shit. He'll know about bleeding.
    Quote Originally Posted by JPB View Post
    listen to you old hags fussing over burrito prices. why don't you swing your purses at each other.

  5. #5
    Join Date
    Nov 2008
    Location
    Savage
    Posts
    7,224
    Car
    BMW X1

    Default

    I've done it twice on a friend's car, primed via vag com.
    Wouldn't risk it without priming.
    “We act as though comfort and luxury were the chief requirements of life, when all that we need to make us really happy is something to be enthusiastic about.” Charles Kingsley

  6. #6
    Join Date
    Dec 2009
    Location
    Afton, MN
    Posts
    1,057
    Car
    2006 VW Jetta TDi

    Default

    Don't do it without priming the filter with vag com.

  7. #7
    Join Date
    Nov 2007
    Location
    Bloomingtown
    Posts
    7,108
    Car
    My Saab

    Default

    I think I've done about 8 or 9 filter changes and only ever opened it up and swapped out. Never had any issues. The Passat doesn't even idle funny right away. I do try to leave the key to ON for several seconds before turning it over though - no idea if that helps or not.

    Quote Originally Posted by Kriesel View Post
    Don't do it without priming the filter with vag com.
    Why?

  8. #8
    Join Date
    Mar 2009
    Location
    Lakeville, MN
    Posts
    1,261
    Car
    MKVII GSW TDI

    Default

    Quote Originally Posted by Champ View Post
    Why?
    The high pressure fuel pump alone is $650. If it isn't lubricated by the fuel, it shoots metal fragments through the fuel rail, the injectors, to the tank (remember fuel pressure is pretty much constant so the overflow goes back to the fuel tank), back through the lift pump and takes out your whole fuel system. All said an done about $4k worth of parts. Same thing happens if you run gas instead of diesel
    the pump is pretty fragile

  9. #9
    Join Date
    Dec 2009
    Location
    Afton, MN
    Posts
    1,057
    Car
    2006 VW Jetta TDi

    Default

    Quote Originally Posted by Champ View Post
    Why?
    This could happen to you:
    HPFP Fun

    The more I've read and learned about this topic, the pump isn't fragile, but if not super clean and lubricated, can easy get destroyed. If properly primed after doing a fuel filter change, the risk of wrecking the pump is non-existent it would seem... So, do it correctly, and prime the system with vagcom, clear out any air in the system, and send filtered fuel into the HPFP after a filter change.
    Last edited by Kriesel; 03-15-2017 at 09:34 AM.

  10. #10
    Join Date
    Jun 2008
    Location
    Olympia, WA
    Posts
    9,365
    Car
    BMW 228i, VW Cabriolet

    Default

    So should I worry about having run the same filter for 40K? I guess if I keep the car and do the dieselgate fix, it will all be covered until 160K miles, so I imagine any problem would present itself by then.

  11. #11
    Join Date
    Mar 2009
    Location
    Lakeville, MN
    Posts
    1,261
    Car
    MKVII GSW TDI

    Default

    Quote Originally Posted by TTaM View Post
    So should I worry about having run the same filter for 40K? I guess if I keep the car and do the dieselgate fix, it will all be covered until 160K miles, so I imagine any problem would present itself by then.
    Where are you at? If you swing by my place in Lakeville we could change the filter in about 20 minutes.

  12. #12
    Join Date
    Mar 2009
    Location
    Lakeville, MN
    Posts
    1,261
    Car
    MKVII GSW TDI

    Default

    double post

  13. #13
    Join Date
    Jun 2008
    Location
    Olympia, WA
    Posts
    9,365
    Car
    BMW 228i, VW Cabriolet

    Default

    I just spoke to Westside. They agreed, they do not have a filter replacement listed being done on my car anywhere in their system, so they'll replace it for free at 40K. I'll probably just have the dealer take care of it, and figure out what to do @ 60K if I decide to keep the car.

  14. #14
    Join Date
    Mar 2008
    Location
    N.E. Minneapolis
    Posts
    4,810
    Car
    GSW TDI 6spd, 74 Scout II

    Default

    Hmmm, Im sure mine WAY over due seeing as ive put 50k on and not changed it and I do not know about previous work.
    Go Green with Diesel.

  15. #15
    Join Date
    Mar 2009
    Location
    Lakeville, MN
    Posts
    1,261
    Car
    MKVII GSW TDI

    Default

    you may run into starting issues when it gets cold. I replace mine every October. or roughly 25k miles

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