950 adventure stalling / fuelpump

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by avantwist, May 26, 2019.

  1. avantwist

    avantwist n00b

    Joined:
    May 19, 2019
    Oddometer:
    2
    Location:
    Holland
    Hi all,

    Have a 950 2003 adventure, bike bogs/stalls in every gear beteen 5 and 6000 rpm.
    Ordered the DR-Bean fuelpump mod but notices when removing the pump that I have a "Pierburg" fuelpump insteadf of the original.
    Could this have caused the stalling/bogging wqith the rpm's?

    Would it be better to replace the pump by anb original or go with the facet one?

    thanks,
    #1
  2. zedtours

    zedtours Been here awhile

    Joined:
    Jan 17, 2006
    Oddometer:
    678
    Location:
    Surrey
    Ignore facet!
    #2
  3. mountaincadre

    mountaincadre Long timer

    Joined:
    Jul 18, 2012
    Oddometer:
    1,478
    Location:
    Mid Calder,Scotland
    WHY? had my facet in for over 40.000 miles with zero issue's, is thete something newer and better?
    #3
  4. KPuusepp

    KPuusepp It's a f***ing 950 adventure...

    Joined:
    May 21, 2013
    Oddometer:
    101
    Location:
    Estonia
    Same here. No problems at all.
    #4
  5. zimtim

    zimtim Adventurer

    Joined:
    Aug 15, 2012
    Oddometer:
    66
    Location:
    UK
    Yeah please tell also had my FACET for a good few years and miles now, and has lasted a lot longer than the OEM one
    #5
  6. zedtours

    zedtours Been here awhile

    Joined:
    Jan 17, 2006
    Oddometer:
    678
    Location:
    Surrey
    Dont last long off road in my experience less than a year, tried 2,but with Dr Bean no problems.
    #6
  7. roookie1

    roookie1 Been here awhile

    Joined:
    Jun 15, 2009
    Oddometer:
    384
    Location:
    Denmark
    My original pump has gone a bit over 100000 km, and is still working. Install the Dr. Bean kit and forget it..
    #7
  8. DirtyADV

    DirtyADV Long timer

    Joined:
    Jan 13, 2007
    Oddometer:
    4,121
    Location:
    SWEDEN, Norsjö
    I'm over 90000 on original pump with original breakers. Did have some issues a couple of years ago and did the MosFet mod since breakers was evenly worn and kept riding.

    But went Dr bean on my dad's bike since breakers were looking bad.

    /Johan
    #8
    roookie1 likes this.
  9. zimtim

    zimtim Adventurer

    Joined:
    Aug 15, 2012
    Oddometer:
    66
    Location:
    UK
    I do quite a lot of off road especially on Salisbury plain and have never had issues with the Facet pump.
    Now the starter relay that's a different issue
    #9
    mountaincadre likes this.
  10. avantwist

    avantwist n00b

    Joined:
    May 19, 2019
    Oddometer:
    2
    Location:
    Holland
    The Facet didnt make the difference, a complete cleanup of the carbs did. thanks all.
    #10
    DirtyADV likes this.
  11. RedRupert

    RedRupert Brit in the Soviet Union

    Joined:
    Jun 12, 2006
    Oddometer:
    804
    Location:
    Riga, Latvia / Bergerac, France / Colchester, UK
    It's difficult to install the Facet neatly - it's a bit on the large side and routing the fuel pipe neatly with a minimum of joints means a fair bit of work. Also the wiring is poor, so can cause reliability problems in the long run. I used a Facet for a while, but switched to the fit-and-forget Mr Bean modified original which has been faultless for well over 100,000 km.

    It seems that the points in the OE pump failed prematurely on bikes that were regularly run low on fuel or often had the carbs run dry for storage - the extra cycling causes the points to burn. Maybe. My points were bad at around 46k km and I'm sure both of these potential causes had something to do with the failure.
    #11
  12. AllenGS

    AllenGS Adventurer

    Joined:
    Jul 31, 2011
    Oddometer:
    47
    Location:
    Portland, OR
    Here's my fuel pump mystery: very occasionally, the OEM pump on my '03 950 doesn't run. After some time passes the pump works again. If my tank's full I don't even notice—so I don't know how often this happens—but it's stranded me once and last night it kept me from going out for a few hours.
    I've confirmed that the pump runs when I put 12v to it directly and last night I swapped the relays when it wasn't working and that didn't fix the problem, so I *think* the pump itself and pump relay are OK.
    Yesterday I had the carbs in hand; is there any relevant wiring to the carbs that could be loose and causing this problem? If not, how does the ECU know when to run the pump and when to stop it... its there a fuel pressure sensor somewhere, or does the ECU just power the pump briefly on power-up and continuously when the engine's running? It seems like there must be a pressure sensor since when I turn my key on my pump runs longer if the bike's been sitting for days, presumably to fill the fuel lines & float bowls, and it runs for just a fraction of a second before shutting off again if I've run the bike earlier in the same day.
    If you've had a similar problem, what & how did you troubleshoot? Thanks!
    #12