question about the fuel filters on 990

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by licascurtu, Apr 9, 2013.

  1. licascurtu

    licascurtu Been here awhile

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    As many of you know already the fuel filters on the 990 are a constant problem. Personally I have to change mine every 30,000 km. The only problem I have now is that I'm in Peru and they're hard to find. In my opinion the cylindrical filter is the one failing from all the heat and bad gas too. Now what I was thinking to do just as a temporary solution is to remove it completely till I find one or replace it with a different one from a different bike ( if there's one that fits). Any of you know of a fuel filter from mostly Japanese bikes that will fit the 990.
    Cheers
    #1
  2. gefr

    gefr Life is a trip

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    So I have no solution for you. I ended up ordering a batch from China.
    Cheers.
    #2
  3. licascurtu

    licascurtu Been here awhile

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    Sounds good..... Can you send me some details about it?
    Cheers man.
    #3
  4. gefr

    gefr Life is a trip

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  5. MAXVERT

    MAXVERT OG on da OC

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    I'd try to clean both the filters by spraying with carb cleaner.
    You could also try to disassemble the filter from it's metal caps
    and find another paper fuel filter and cut it up to fit into the metal caps.
    Someone here on the OC has done a thread on doing this.

    If you decide to delete the paper filter you might want to install an
    external fuel filter.

    Max
    #5
  6. licascurtu

    licascurtu Been here awhile

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    #6
  7. licascurtu

    licascurtu Been here awhile

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    My last hope is KTM Lima tomorrow if not carb cleaner it is....thanks for the advice really good idea.
    #7
  8. StevenD

    StevenD Hmmmm, dirt!

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    I recently received Gefr's filter pack and it looks great.
    Even got the O-ring with it and it came in the cutest little box covered with Greek postal stamps :D

    The sock filter looks like its made from recycled granny pantys but I bet it works just as well as the original ones Or better as there is a large plastic framework inside.

    I'd recommend it!

    As a more tem solution, cleaning with carb cleaner or as a dangerous solution, removing it and installing one external of the tank could work as well. I just fear you lose some pressure with an out of tank filter.
    #8
  9. licascurtu

    licascurtu Been here awhile

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    I'm not gonna put anything outside the tank is just a temporary solution till I'll find some...worst case I'll clean the bag filter with carb cleaner and remove the cylindrical one.
    #9
  10. Deviant666

    Deviant666 Present

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    +1 on Gefr's fuel filter pack, cheaper and just as good as the original...
    #10
  11. what car??

    what car?? down the road

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    I would hate to lose the main (cylindrical) filter as the possible contamination to the injectors. Getting some micro junk in the injector nozzle or pintle valve would be not so good in my opinion. I'm thinking of tearing out the old filter material and trying to replace it with some new filtration medium. I'm just curious about whether there is a tight enough fit in there to keep the caps from dislodging or creating another issue. I'm sure there's some kind of adhesive used for the paper element where it's attached to the caps, but what is it. I'm in need of filters (or a possible pump) also here in Guatemala, dealership doesn't have them.

    Also, how would having an external fuel filter lower fuel pressure?? It has to go through the filter regardless of where it's at. It would have a few more inches to travel, but as far as pressure I don't think it would lower it. Anyone with experience with this? I'm willing to try it as a solution for my issues if none others present themselves. Although I guess I could have a friend ship some to me, but at a cost :(
    #11
  12. gefr

    gefr Life is a trip

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    The difference with installing an external fuel filter is this: The pump pressurizes fuel at 3,5bar and then passes through the external filter and looses some pressure; in the OEM situation, fuel is pressurized through the filter and then regulated to 3,5bar and continues towards fuel injectors. However I read of a person that is running this setup and is quite happy with it. I prefer clean solutions.
    Cheers.
    #12
  13. pdxmotorhead

    pdxmotorhead Been here awhile

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    Worst case,, NAPA sells every fuel strainer from just about every vehicle made and has a book with pictures.. :)

    Dave
    #13
  14. gefr

    gefr Life is a trip

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    Well not KTM filters
    #14
  15. licascurtu

    licascurtu Been here awhile

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    I know that after the cylindrical filter goes in my opinion it's worse having it than not, as it disintegrates itself and than u end up with lots of stuff in your injectors.....Anyway I found filters in Lima...KTM Lima is huge and they have a lots of stuff including tires.
    Thanks for all your help here....happy now:freaky
    #15
  16. rattis

    rattis Long timer

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    Me too I bought one of Gefr filterkits too but it's, I hope in sunny Cali and I'm here eager to go.
    So I've yet to see my Greek stamps.:D
    #16
  17. gefr

    gefr Life is a trip

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    :rofl:rofl:lol3:rofl:rofl
    #17
  18. Dusty

    Dusty Long timer

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    Sent from my XT910 using Tapatalk 2
    #18
  19. gefr

    gefr Life is a trip

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    I think the paper filter disintegrated after washing it with brake cleaner. The glue obviously didn't withstand the strong chemicals. I haven't heard anybody else complaining for the disintegration of his cylindrical fuel filters.
    Cheers.
    #19
  20. sonoran

    sonoran friend of P

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    Hey I got a cool amoeba stamp :D

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    #20