Doing the points on your OEM fuel pump? Have some free advice.

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by flux_capacitor, Jul 28, 2013.

  1. flux_capacitor

    flux_capacitor I know a shortcut!

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    Here's the biggest lesson I learned while repairing my poorly running 950's stock fuel pump.

    Make sure the little tab attached to a spring fits into the groove on the shaft of the fuel pump before you button everything back up. Its an easy detail to miss, and not one I knew about til my friend Jeff mentioned it to me. I had replaced the points and my bike still would not start and I was having big issues chasing the problem. Once I took the pump back apart, and saw that tab wasn't in the groove, and fixed it, the bike fired right up.

    Also, you should be able to just plug the fuel pump back into the wiring harness (without even hooking it up to the fuel lines), turn your key on, and the pump will (should) make the familiar clicking noise we all love.

    Cheers.
    #1
  2. mjlang

    mjlang Man Caves Rule!

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    If you do a search, there is a guy from Holland selling a solid state electronic update to the pump. It makes that pump bullet proof for 50 euro. Forget the points.
    #2
  3. SpeedyR

    SpeedyR SE in the SE

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    main advantage for most is that (at least for me) the local shop has the points in stock and they are $28. It's the same points kit that goes into a lot of the modern bikes fuel pumps.

    I'll eventually switch over to an alternative fuel delivery system (more than likely the Mikuni vacuum pump as it's one of the only ones I've read about very few failures), and at that time my stock pump will become my backup.

    here was a good writeup I found on the points replacement from the CBR forum:

    http://cbrforum.com/forum/stickies-91/how-repair-your-f3-fuel-pump-102151/

    in this writeup, he mentions the points fitting in the groove on the shaft which I didn't find on many other threads on ADV, so when mine wasn't working, I went back and found the CBR writeup and read thru it, looked online for other photos showing the exact placement of the points in the groove and mine fired right up. when mark described about the same sound (just one "pump" but not the usual "studder" when you flip the switch) I suggested he check that slot. bingo!

    so if you want to replace your points with new points, this is the tip to make sure it works correctly.

    if you want to replace it with a solid state system, the Dr. Beans kit is the way to go but at least for us US folks, my guess is it's at least a few days away or more (and a bit more money but not much).

    good riding with you this weekend flux!
    #3
  4. EZ300

    EZ300 Just wanna ride my motorsickle

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    Link?
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  5. ToddLite

    ToddLite Been here awhile

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    #5
  6. flux_capacitor

    flux_capacitor I know a shortcut!

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    Dr Beans was out on holiday or something til end of August so that wasn't happening for me.

    I've got an entire Facet pump assembly sitting on a shelf for when this one goes out again.
    #6
  7. ABuck99

    ABuck99 0.0

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    Flux: Excellent update to the FP points replacement process.

    The only reason I see to install the Dr bean kit is to eliminate the issue of the points contacts from wearing out. The Bean kit doesnt change anything else with the pump delivery, and there are other durability concerns that come to mind with a circuit board, that at times will be under water, exposed to prolonged heat and vibration. So while the Dr Bean Kit is a nice solution, its not always available, and its pricey for us on this side of the pond. Personally, 20,000 miles out of my first set of points was an acceptable result. And for under $30 you can re-new the points with a fresh kit. But for a just a dollar or two more its possible to make your own solid state pump mod by adding a simple radio shack diode which would in theory extend the life of the points. ( in simple terms by cleaning up the current).

    I read about a mod to effectively create a solid state circuit by simply adding a diode to the FP points. I found this "how to" on a Honda Deauville forum, that explains in detail how to add the diode to the Mitsubishi FP points to extend their life span. This mod in theory would match the result that the Dr Bean kit delivers, longer FP life. **I have not personally done this mod.

    http://hankeln.net/freizeit/nt650v5/fuelpump-diode_en.html
    #7
  8. gefr

    gefr Life is a trip

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  9. mcmann

    mcmann Motorcycle ADV enthusiast

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    Its good idea to take a digital picture before and after for items like this and carb vents lines & hoses etc to refer to for comparison.
    #9
  10. RedRupert

    RedRupert Brit in the Soviet Union

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    The OE Mitsubishi pump is know to be very reliable, except for the points.

    If you add a diode, and run the pump before replacing its cap, you'll still see arcing at the points. Less arcing, but still arcing. You can expect longer service life, but it will not be fit and forget. In my view, Dr Bean's solution is the way to go. It's well made.

    I replaced my Facet with a Dr Bean-ised OE pump, as the external wiring on the Facet is of poor quality and not suitable for the semi-exposed and hot area in which it is installed.

    The fact that vacuum pumps need battery sapping engine cranking in order to prime puts me off, as the OE battery is already on the small side.
    #10
  11. flux_capacitor

    flux_capacitor I know a shortcut!

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    Yup you are right, that IS a good idea. Not sure I would have noticed this little groove though. And I never saw it mentioned in any of the HUNDREDS of posts about fuel pumps going bad that I read through. Kinda makes me wonder how many GOOD fuel pumps there have been that were deemed garbage because this detail was missed. :freaky
    #11
  12. Skinner

    Skinner Mr.KTM

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    Have there been any improvements to the fuelpump, do i need to be concerned about my 2013 990?
    #12
  13. Boatman

    Boatman Membership has it's privileges ;-)

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    This thread pertains to the fuel pump on the early carbureted models. Pump on the injected bikes is a different animal.
    #13
  14. brents347

    brents347 Trusting my Cape...

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    Thought I'd add a quick update to this thread. My 950 SE fuel pump died last night (first fuel pump failure in 4 different LC8's and 60,000 miles). I needed to get it fixed fast (today) so I can make a track day tomorrow so I went searching for points. Turns out the same pump is use on Kawi ZX-6, ZX-7 an ZX-9 models, Kawi Vulcans and Honda CBR 600 F3's all from about the 2002 era. Also, K&L supply makes a replacement part for the points. It is part number 18-4615 an I picked up a set from Parts Unlimited today for $23. Not too bad and I got the bike going for my track day!
    #14
  15. GrenDesb

    GrenDesb Been here awhile

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    Dr. Bean kit, all the way. :deal

    Arrived to Canada in 5 days from Holland.

    Great instruction sheet, easy enough to install and works perfect for as long as you'll own the bike.
    #15
  16. brents347

    brents347 Trusting my Cape...

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    Yes, but I didn't have 5 days to wait for a Bean kit. I needed points, today.
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  17. genghis9021

    genghis9021 Arak Connoisseur

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    +1.
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  18. GrenDesb

    GrenDesb Been here awhile

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    Two each situation a different solution.

    Wasn't answering to you but adding to the thread.

    There are people in my area that carry spare KL points and a soldering gun on the trail and spare pump and etc, etc and still ended up having to end their trip this summer.

    The points are to fragile of a mecanism to be on an off road bike and Dr. Bean kit is the best solution as it's almost plug and play and totally fixes the problem without too much modifications.

    But I agree, when you need a fix, there nothing like what you can get around the corner.
    #18
  19. CoFloW

    CoFloW Pray For Snow.

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    Rolling closely to 10,000 miles since i installed my DR B Kit!!! Big ups Doctor!!:D
    #19