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  • Back firing

    Any ideas why my bike sounds like crap when it runs and back fires out the exhaust pipe. I changed the oil and found gas in the oil adjusted the carbs for k&n filters, and replaced the fule cock.

  • #2
    You're running lean. If you have the stock exhaust and K&N filters you're bringing a ton of air in but can't push any more out.
    90% of motorcycle forum members do not have a service manual for their bike.

    Originally posted by Badfaerie
    I love how the most ignorant people I have met are the ones that fling the word "ignorant" around like it's an insult, or poo. Maybe they think it means poo
    Originally posted by soulless kaos
    but personaly I dont see a point in a 1000 you can get the same power from a properly tuned 600 with less weight and better handeling.

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    • #3
      Originally posted by scottynoface View Post
      You're running lean. If you have the stock exhaust and K&N filters you're bringing a ton of air in but can't push any more out.
      So i should look into getting new eshaust?

      Comment


      • #4
        Mine backfires once or twice at the beginning of the season but other than that no problems...

        Comment


        • #5
          mine does to when it's still cold

          Comment


          • #6
            Is it a backfire or an afterfire?
            90% of motorcycle forum members do not have a service manual for their bike.

            Originally posted by Badfaerie
            I love how the most ignorant people I have met are the ones that fling the word "ignorant" around like it's an insult, or poo. Maybe they think it means poo
            Originally posted by soulless kaos
            but personaly I dont see a point in a 1000 you can get the same power from a properly tuned 600 with less weight and better handeling.

            Comment


            • #7
              it does it when you rev it up and let off the gas

              Comment


              • #8
                sounds lean to me too. you said you set carbs for k&n's but did you re-jet? Try this guide, it it may help.
                http://www.factorypro.com/tech_tunin...m_engines.html
                WOW! your bikes really fast! you were flying when i passed you!

                xbox live= katana11
                We Will Always remember!
                sigpic

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                • #9
                  It was already rejeted but the person put the washers on the wrong side of the needles so i had to fix that! (they had the washers on top of the clips instead of below the clip

                  Comment


                  • #10
                    Originally posted by kerschey View Post
                    It was already rejeted but the person put the washers on the wrong side of the needles so i had to fix that! (they had the washers on top of the clips instead of below the clip
                    Duh go figgure.did that help?
                    WOW! your bikes really fast! you were flying when i passed you!

                    xbox live= katana11
                    We Will Always remember!
                    sigpic

                    Comment


                    • #11
                      take carbs apart blow out pilot jets with compressed air. While jets are out blow out passage way as well with compressed air. Spring time problems usually occur because bikes were not put away properly. Drain carbs in the winter and use stabalizer just in case. Should eliminate carbs from getting bunged up.

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