950 Adventure jetting/starting question

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by cjbiker, Jun 3, 2014.

  1. cjbiker

    cjbiker Nobody's Robot

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    Hi, quick question on jetting for a 2005 950 Adventure. I just installed the Head2Wind prefilter and jet kit. 45 pilots, 70 IAJs, 145/148 mains. Needles on the 3rd clip. Stock exhaust, no canister to be found, sea-level elevation. I think I set the fuel screws at 2 turns (should have written it down!). Runs great except it is a bit hard to start cold. I have to crack the throttle a bit and it takes a few cycles of cranking for a few seconds. Once it warms up, it's perfect. No issues restarting when hot. Any suggestions? I'm thinking of turning the fuel screws in a half-turn, but since I have to disassemble half the bike to get to them, I'd like to have an educated guess before I do. Yes, I know I can get extended fuel screws for $100. I might go that route, but I'd rather not. Thanks!
    #1
  2. AdvRonski

    AdvRonski They call me......Ronski

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    Just to be clear, are you using the choke?
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  3. cjbiker

    cjbiker Nobody's Robot

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    Yes. I've tried full choke, half, quarter, etc. It needs full choke and the throttle cracked to start. 40-50 degree morning temps.
    #3
  4. juames

    juames Have Fun, Don't Die!

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    Tight valves cause this symptom?
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  5. cjbiker

    cjbiker Nobody's Robot

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    That usually results in hard starting when hot, as far as I've heard. And I should have said, it started fine with the stock jetting.
    #5
  6. Chuckracer

    Chuckracer Jerkus Maximus

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    I'd go back to stock jetting then.
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  7. cjbiker

    cjbiker Nobody's Robot

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    But then it would be too rich with the prefilter :wink:
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  8. Chuckracer

    Chuckracer Jerkus Maximus

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    I'd choose good starting over a pre filter. :lol2
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  9. cjbiker

    cjbiker Nobody's Robot

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    With all the positive reviews on the pre-filter and Head2Wind jetting, I've never read any complaints about starting. I'm sure some small adjustment will fix it. I'm not ready to throw in the towel yet.
    #9
  10. ABuck99

    ABuck99 0.0

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    You might check in with Ken since you bought his jetting kit- he'll have the right answers.

    Possible that your idle adjustment is set too high- once you get it running and warmed up, set to 1500/1600rpm and see how it restarts. Also, when you take the carbs off its a good idea to synch them after you re-install. Also did you check your TPS?
    #10
  11. cjbiker

    cjbiker Nobody's Robot

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    Idle is 1400-1500. I didn't sync the carbs or mess with the TPS.
    I was hoping he would chime in here, I'll give him a call. I bought the kit used in the FM here, so I'd understand if he doesn't want to help me.

    On another note, when I started it this morning, I held down the starter button while slowly pulling on the choke. Once it was about half way out, it lit right off.
    #11