Runs Great Cold;Stutters/Hesitates When Warm

Discussion in 'Engine, Fuel and Exhaust' started by RibEye, Mar 8, 2011.

  1. RibEye

    RibEye Junior Member Contributor

    973
    48
    44
    03 RKC runs great when cold, and stutters/hesitates/coughs when warmed up. Not consistent. Sometimes runs great for 2-3 days.

    Always starts on 1st spin. Symptoms do not seem the same as when there was a hole in the inside-tank fuel line. A tank with Sea Foam, and new plugs, no change. Exhaust tight against jugs (no leaks I think).

    Any ideas?

    Thanks,
    Rich P
     
  2. ultra...good

    ultra...good Banned

    302
    0
    2
    As always, what is the whole story about the bike?
    How long have you owned it, how many miles on it?
    What mod's done that you know of?
    Were the problems there before the mods if you did the mods?
    Any other issues that coincide with the problems your having?

    Just to move this along a little, there was someone here that had problems like your having. Turned out to be bad insulation on the wires that lead into the injectors. However, if that is not it, and probably won't be (murphys law) please answer as much of the above five questions as possible.
    :D
     
  3. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

    4,310
    73
    130
    Ultra Good is steering you in the right direction. Its all about the details. Could electrical could be fuel. What did you work on before this happened? What part of the throttle does it stumble, etc. I'll take a wild guess and say, Intake manifold gasket leak. Although I would think it would be consistently leaking. The fact that its inconsistent makes me think electrical. Let us know more info.

    Bodeen
     
  4. FishHunter

    FishHunter Active Member

    134
    26
    1
    Sounds like a rich condition, for whatever reason.
    Scott
     
  5. RibEye

    RibEye Junior Member Contributor

    973
    48
    44
    How long have you owned it, how many miles on it?

    Its an '03, 20K miles, had it year and half.

    What mod's done that you know of?

    TFI, Stage 1

    Were the problems there before the mods if you did the mods?

    No mods cause issue, just developed

    Any other issues that coincide with the problems your having?

    Issues fully listed.

    Enjoy,
    Rich P
     
  6. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

    4,310
    73
    130
    First thing I would try is to unplug the TFI and plug it all back in as factory and see what happens? That may tell you if its the TFI. I would check injector wiring over real good too. See what happens.

    Bodeen
     
  7. BUBBIE

    BUBBIE Well-Known Member

    4,959
    83
    113
    All you need to do on the TFI is Un-do its Ground wire. All will work as the stock set up but the TFI will be OFF. It is one of the easiest ones to trouble-shoot.. If it doesn't do the problem with TFI out of the picture, go to dobecks Products Support here on site and ask to get an answer.

    signed....BUBBIE
     
  8. jaxdwg

    jaxdwg Active Member

    209
    28
    3
    are the plugs stock??? if not, put in some stock plugs and see if that helps. I did that for a friend and fixed his hesitation/stumble on 08 ultra
     
  9. jethro706

    jethro706 Member

    19
    0
    0
    I agree with intake leak. Can very from day to day. Depends on temperture, riding time before trouble starts, many things.

    I can be something else but that's my guess with little information.
     
  10. Hoople

    Hoople Account Removed

    7,198
    0
    34
    See if the ECM is clean of any DTC codes. You may have one stored.