Tallinn to Dakar Rally

Discussion in 'Ride Reports - Epic Rides' started by memento13, May 25, 2019.

  1. Franque

    Franque Been here awhile

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    It could be a connection fault, have your checked to see if the fuel pump is getting voltage? A significant drop could cause the no-start condition. If it were me, I'd pull out the injector, and keeping it connected, crank the motor over and see what the spray pattern looks like. If it isn't a fine must, replace it. If nothing comes out, it might be a fuel pressure or electrical problem upstream.

    Checking power to the injector requires a good pwm meter, so I would save that for last.
    #41
  2. memento13

    memento13 Travelling in Africa

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    Yes, installed new.
    #42
  3. memento13

    memento13 Travelling in Africa

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    Weirdly can't find anything about injector (removing, installing procedure etc.) in KTM service manual :s.
    #43
  4. 2old2Bbold

    2old2Bbold was 2bold2getold

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    Might check the filter in the tank. Some have split.
    #44
  5. Franque

    Franque Been here awhile

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    Can't help you there, I've never worked on one. I'd pull the tank, it'll either be bolted on to the throttle body, or between it and the intake valve. It'll probably have a two wire plug coming out of it.
    #45
  6. twowings

    twowings Comfortably Numb... Supporter

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    Swap in a known-to-be-good battery as an A/B comparison test...If possible, have the old battery load-tested...
    #46
    Franque likes this.
  7. Franque

    Franque Been here awhile

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    Not a terrible idea, but getting good batteries in West Africa can be difficult.
    #47
  8. 2old2Bbold

    2old2Bbold was 2bold2getold

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    #48
  9. memento13

    memento13 Travelling in Africa

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    Injector bolts seem to be quite inaccessible. Got one out, but not the other, just not enough room. Need to clean this area of the bike as well.

    It's time to call it a day and hope tomorrow is better.
    #49
  10. memento13

    memento13 Travelling in Africa

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    Yeah, don't know where to get new battery now, will meet another motorcycle rider in a couple of days, maybe I can use his battery.

    Although doubt it is battery, it cranks fine and tried with full battery booster aswell, but you never know.

    I suspect some bad electrical connection and fuel is not injected, but hard to test without accessing the injector.

    Could it be somewhere between kill switch and injector? As I removed ignition key yesterday, maybe I damaged some connection. Although it started fine several times after that.
    #50
  11. memento13

    memento13 Travelling in Africa

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    Not the easiest thing to check, have to empty the tank etc. Everytime I disconnect fuel quick connect, there is fuel there, wouldn't that mean that problem must be somewhere further down the line?
    #51
  12. horsti

    horsti Adventurer

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    Hi,

    some weeks ago a friend had a similar Problem at his 350excf (maybe same assamble)
    His bike did not start like yours.
    We found out tha it started with a small dose of brake-cleaner (like Start-pilot) and then died short after like less fuel (to lean mixture)
    At his bike it was a bursted fuel tube inside the tank.
    We have seen it throug the fillercap inside the tank. (like small stream waves in the fuel).

    I hope that helps and You can ride soon (love Your report) !

    Regards !
    Achim
    #52
  13. memento13

    memento13 Travelling in Africa

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    Thanks, will take out fuel pump tomorrow and check it. As I have spare fuel pump with me, maybe I'll change it and see if it helps.
    #53
  14. Franque

    Franque Been here awhile

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    You could just jump it. You could also use the other injector to test the electrical system, just hook up fuel and power to it, if it injects fine, then worry about swapping them.
    #54
  15. memento13

    memento13 Travelling in Africa

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    So plan for today:
    1. Change/check fuel pump
    2. Change/check injector
    3. Continue brainstorm...
    Will start with fuel pump as I've done this job before.
    #55
  16. memento13

    memento13 Travelling in Africa

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    Fuel pump and filter visually look ok. Will drop the new one in.

    Have kind of feeling that in the end it will be something incredible simple that I just have missed to check.

    Poured fuel from tank to Giant Loop Gas Bag to find out it has called a day as well and leaked fuel everywhere. Was fine last time I used it. I guess my 20% shorter fuel range is not my problem right now.
    #56
  17. memento13

    memento13 Travelling in Africa

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    Fuel pump changed, same result.

    Although it sounds a little bit more promising:



    Once I even thought it is gonna start, maybe I'm starting to imagine things. Will recharge booster, maybe battery is weak.

    Will clean the wiring and change injector next.
    #57
  18. Franque

    Franque Been here awhile

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    How did the plug look? Was it wet?
    #58
  19. memento13

    memento13 Travelling in Africa

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    So it is not injector either, changed to new:
    20190716_141241.jpg

    They both spray similarly, this is old one:
    #59
  20. memento13

    memento13 Travelling in Africa

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    It was dry, but had black soot on it:

    20190716_145534.jpg

    When I tested the spark, it was not very strong, but I really don't have baseline to compare it to, as I've never tested spark before.
    #60