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COMET GT250 Sputtering n Choking issue sorted.. :)

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  • #1

    COMET GT250 Sputtering n Choking issue sorted.. :)

    hi guys..,

    As many of you already know that my babe aint doing so well as how it used to and I was seriously in search of a well trained mech in Hyderabad rather than some idiot who "learns" on our babies..!!! !!! Finally..., found one.., who is a Hyosung company trained mech for Comets/Aquilas..!! Yippee..!! !!!

    Coming to the point now.., My comet used to choke for a sec or two when sudden bursts of throttle was given as if there isnt enough fuel supplied or more air getting in. Got my baby checked many times by many popular mechs here in Hyderabad, some were even SBK mechs I know.., but sadly no one could even find where the issue was. All the time.., they just cleaned the carb and fixed it back saying everything is just in place and fine..! My search for a well trained mech for servicing my babe.., finally ended today..!! He took the comet for a spin, checked the iginition system and said there is definitely an issue with the carb. He opened the carb.., every single part of it, it was a piece of cake for him..!! (trust me guys.., comet's dual carbs are very very complex..!!) and within mins.., he showed me this...

    Broken Needle Jet screws


    The broken n blocked part of the screw


    Its the needle jet (not the main or pilot jet)n its screw..! The earlier mech (A**H***) sorry abt the language.., broke the needle jet screws of both the carbs..!! Yes, both..!! and fitted them without even letting me know..!! Coz of this.., both the needle jets started moving when given throttle.., pushing in more air from the airfilter leaving the engine choke when given sudden throttles...! Rushed to a autospares shop checked with all the jets of various vehicles which suits almost near the original shape. Finally got some rx100 jets to a lathe shop to get them altered/threaded into place and had to get them gas welded to close the nozzle opening at one end.

    RX100 Jet


    Jet after gas welding


    The Final Setup...


    Mech working on my babe...


    Wheeew...!!! It took me a whole day to get these all done and then get them placed intact. n now.........

    Woooooooooooohooooooooooooo.............

    My Falken (thats how I cal my comet ) is ffffffffffflllllllyyyyyyyyiiiiiiiiinnnnnnnnnnggggg ggggggg...

    P.S ~ sorry for such a long post...
    Last edited by Sri; 08-08-2010, 08:46 PM.
    sigpic
    Yes, 'U' heard me right..!! "WE RULE THE ROAD...!!"
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  • #2
    Topic Approved.
    :)

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    • #3
      Originally posted by Sri
      My Falken (thats how I cal my comet ) is ffffffffffflllllllyyyyyyyyiiiiiiiiinnnnnnnnnnggggg ggggggg...
      I can understand this feeling, this feeling comes out at highest satisfaction after many days of struggle. Good to hear your issues being resolved. Keep hitting the road.
      Skill is what keeps you on a Motorcycle
      Awareness + Skill is what keeps you out of harm's way
      ATGATT + Awareness + Skill means you might Live To Ride another day

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      • #4
        nice going sri.... i know how you feel..take care of your babe... its a beautiful one
        I RuLe Da HeAvEn, I RuLe Da heLL,I RuLe Da UnIvErSe, As HuMaNiTy FeLL

        sigpic

        http://www.orkut.co.in/Main#Profile?...79612188840642

        http://www.facebook.com/home.php?#!/...00000077242611

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        • #5
          wow!! thats great




          saj*
          you wanna know me?

          COME RIDE WITH ME!!!!

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          • #6
            Aaaaall is well that ends well.

            I always feel that the owning experience of any bike is complete when you either have the full mechanical knowledge of how to repair it or for people (like me) with mechanical limitations is to have a mechanic who understands the bike like the back of his hand.



            Growing old is compulsory - growing up is optional
            So many roads, So little time
            RIDE for PASSION

            See us & our global rides at:
            www.rideforpassion.com

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            • #7
              i also hav some problem regarding the choking....

              Comment

              • #8
                Thats an awesome work, keep it up !!
                "Engine tuning is not an exact science, but with some practice and patience you'll get comfortable with your skill and be able tune for any conditions mother nature throws at you"


                Still the Boss -- RX 135

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                • #9
                  great troubleshooting there man!!! great going.


                  My offerings to the gods of speed -

                  - KTM Duke 200
                  - Yamaha RXZ 5 speed


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                  • #10
                    well done !

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                    • #11
                      Congrats on finding a good mech and getting the bike sorted. One question though, why is the main jet blocked? How will the petrol get into the needle jet and then the venturi? Im kinda confused here!
                      85 RD350
                      98 900rr Fireblade
                      01 rx 135 5spd
                      05 zma
                      06 Baleno
                      09 SX4 vvt

                      Owned-69'G2, 82'STD350, CI535, 86'RD350, 03ZMA, 07ZMA etc

                      Baby sitting: Mivec Turbo aka the garage queen! LOL

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                      • #12
                        Originally posted by Aryan View Post
                        Topic Approved.
                        Thanx for approving the thread Aryan bhai...

                        Originally posted by aargee View Post
                        I can understand this feeling, this feeling comes out at highest satisfaction after many days of struggle. Good to hear your issues being resolved. Keep hitting the road.
                        Thanx bro... I was really pretty worried about my babe's health.., there were times wen I even had nightmares... lol All iz well now..

                        Originally posted by satan69in View Post
                        nice going sri.... i know how you feel..take care of your babe... its a beautiful one
                        Thanx Thejus...

                        Originally posted by saj View Post
                        wow!! thats great
                        saj*
                        Thanx Saj bhai...

                        Originally posted by Haroon View Post
                        Aaaaall is well that ends well.

                        I always feel that the owning experience of any bike is complete when you either have the full mechanical knowledge of how to repair it or for people (like me) with mechanical limitations is to have a mechanic who understands the bike like the back of his hand.
                        Very true bro... cant agree with u more...

                        Originally posted by devrockz View Post
                        i also hav some problem regarding the choking....
                        Hi dev.., is it choking or a little hesitation when given sudden throttle?? coz a little negligible hesitation in acceleration when given sudden throttle is something common to Comet/Aquila. check the review of the comet by Sunny bhai during the Great Indian Roadtrip. Here is the link... check out the 9th paragraph from top... The Great Indian Roadtrip : Comet

                        Originally posted by psycho 98 View Post
                        Thats an awesome work, keep it up !!
                        Thanx bro...

                        Originally posted by jd666 View Post
                        great troubleshooting there man!!! great going.
                        Thanx bhai...

                        Originally posted by arvindraju View Post
                        well done !
                        Thank you bro..

                        Originally posted by James View Post
                        Congrats on finding a good mech and getting the bike sorted. One question though, why is the main jet blocked? How will the petrol get into the needle jet and then the venturi? Im kinda confused here!
                        Thanx James bhai. Coming to the issue.., the main jet aint blocked bro. As a matter of fact.., there is no issue of blockage. The only issue was with the Needle Jet screws which were broken. N these screws arent the normal jets which have a screw threading at one end n nozzle opening at the other. These look almost similar but the only difference is there wont b a nozzle opening. They just hold the needle jets in place n intact.

                        Coming to the other question abt how petrol gets into needle jet, we all know that the needles inside the carburettor are the ones which regulate the amount of fuel going to the engine when certain level of throttle is given, by moving in n out of needle jets accordingly with the throttle. So adjusting the needles, inturn adjusts the carbs to run rich/lean in the comet. Now since both the needle jet screws are broken.., which resulted in the movement of the needle jets (which shouldnt be happening) n when sudden bursts of throttle were given.., both the needles n the needle jets started moving giving improper amount of fuel to the combustion chamber, which resulted in the choking.
                        Last edited by Sri; 08-09-2010, 05:49 PM.
                        sigpic
                        Yes, 'U' heard me right..!! "WE RULE THE ROAD...!!"

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                        • #13

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                          • #14
                            sure bro..., ill ask him n let u know...
                            sigpic
                            Yes, 'U' heard me right..!! "WE RULE THE ROAD...!!"

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                            • #15
                              OT: Hi Sri, unable to PM you.
                              STOP Honking - START Riding

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