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Interstate bog?

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  • #1

    Interstate bog?

    -2006 600


    So after around putting 100 miles on my bike after cleaning (dipping the carbs) and putting in a jet kit the bike now has a bog after going 70mph for a while.


    I'm wondering what would've caused this? Before it would roar through the rpm range. It only seems to do it after I've gone 65-75 for a while. Hitting high rpms in 2,3,4 gear is no problem. Only bogs at higher speeds. It's not major, I'm still very able to continue going the speed limit or accelerate faster. It just doesn't feel as powerful as it was before it started happening. Any suggestions?


    BTW I haven't changed anything to the bike in the 100 miles. I can remember it starting after I took the bike over 100mph for the first time. Also I'm not quite sure if the correct word for this is hesitation or bogging. It will go faster, it's just not immediate like before. If I slowly roll the throttle it will work its way out of it and go faster.
    Last edited by Xerrith; 02-22-2017, 09:02 AM.
    Tags: None
  • #2
    I was thinking today...Do I just need to further tune the jet kit? I took it out on lunch and it did the same thing in second gear approaching 7k rpms. I have the factory pro needle on the 3rd clip down, with stock jets. A/F ratio set to 2.5, and float height is 14mm.

    The bike doesn't have an excessive fuel smell, and there's no leaks. Oil looks just as clear as it did when I changed the oil 100 miles ago.

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    • #3
      Might be running a little rich sounds like.. could try droping the needle one notch which could be a quick test to see if the "flat" spot moves.
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      Anything that, in happening, causes itself to happen again, happens again. It doesn’t necessarily do it in chronological order, though.”
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      • #4
        If your carbs were dirty, your tank is probably dirty.

        You cleaned the carbs, but didn't address the dirty tank issue.

        Now the carbs are dirty again.
        -Steve


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        • #5
          What size jets did you use?

          Krey
          93 750 Kat



          Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736

          "I've done this a thousand times before. What could possibly go wron.... Ooops!"

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          • #6
            The tank definitely isn't dirty or rusty. I've gone through two tanks of gas and it runs perfect other than around 6-8k once warmed up. So that's not an issue.

            After reading the jet kit instructions I do think I need to move the needle down a notch. It pulls pretty good and hard when cold. I'm impressed by the power in all ranges, the bogging just isn't preferable.

            Krey, I'm running stock jets. All I have is a slip on l, everything else is stock.

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            • #7
              Check the specific RPM range of the issue. Speed is irrelevant ussually, it's the rpm that really is needed.

              Krey
              93 750 Kat



              Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736

              "I've done this a thousand times before. What could possibly go wron.... Ooops!"

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              • #8
                Is it bogging or a flat spot?
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                • #9
                  It cuts out and doesn't want to go past 7-8k when it's warm. That's the only time it cuts out. Idle and everything else is perfect. Consistently happens when warm and you try to get on it and the rpms get to 7-8k it cuts out and stops pulling as hard.

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                  • #10
                    Stock air filter and air box?

                    Krey
                    93 750 Kat



                    Modified Swingarm, 5.5 GSXR Rear with 180/55 and 520 Chain, 750 to 600 Tail conversion, more to come. Long Term Project build thread http://katriders.com/vb/showthread.php?t=96736

                    "I've done this a thousand times before. What could possibly go wron.... Ooops!"

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                    • #11
                      Ok, so you installed a jet kit. It sounds like you didn't tune it as per the instructions. Top end is tuned first, then mid, low rpm. Or are you tuning now and having the issue?
                      Last edited by 92xjunker; 02-25-2017, 09:58 AM.
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                      • #12
                        Yeah I'm tuning now and having the issue. Stock air filter and airbox.

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                        • #13
                          Does it eventually get past it? Popping on decel? What jets were installed? Fuel filters?
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                          • #14
                            Yeah it does get past it. Only pops on decel when revving high. Doesn't pop on decel at all when riding. Stock jets. Stock air box, stock air filter. Slip on exhaust. 14mm float height. 2.5 turns out on a/f. I followed everything to a T. I just dropped the needle down another notch. I'll have to test when the weather here doesn't go from 70 to 32 degrees the next day. I'm not sure if the fuel filter is stock. I'm not sure what stock is supposed to look like. There's no pics online

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                            • #15
                              Might be time to change the fuel filter. OEM seems to be the only properly flowing filter you may have to up the main jet size rather than leaning out the bike more by dropping the needle. Or raise the needle. Flat spots are usually a lack of required fuel.
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