Mr.XX Posted November 12, 2003 Share Posted November 12, 2003 For the Carbed and Carb savvy, I recently had a dynojet kit installed on my 97 bird it runs great except it stumbles when I first crack the throttle otherwise it works good throttle response is much improved everywhere else. I dont have a great holeshot to start with (leave the jokes in the pub :roll: ) but that is where the stuble shows up any Ideas ? Quote Link to comment Share on other sites More sharing options...
ststricker Posted November 12, 2003 Share Posted November 12, 2003 Have you had the carbs synch'ed lately? Just an idea. I had mine done last year and it made a noticeable difference in the idle and initial throttle response. Quote Link to comment Share on other sites More sharing options...
Mr.XX Posted November 14, 2003 Author Share Posted November 14, 2003 yeah I had all that done when I put the jet kit in Quote Link to comment Share on other sites More sharing options...
Northman Posted November 14, 2003 Share Posted November 14, 2003 Too rich. My buddy's did this when we installed his jet kit, and to me it felt like a lean stumble. So, we disassembled the bike again, and raised the needles one notch. Couldn't tell much difference, so raised them another notch, when the stumble got really bad. Took it apart for the third time, and lowered the needles as low as they could go but left the washer under the clip. It was pretty good, but I still want to remove the washer and try it once more. Try lowering your needles one notch and see what happens. Quote Link to comment Share on other sites More sharing options...
Mr.XX Posted November 14, 2003 Author Share Posted November 14, 2003 thanks North, I'll try that...I think I'll put the K&N back in first see if this makes a difference....I took it out because the bike ran like crap when stock with the K&N in... now that I have jetted it and put the slipons on maybe the increased airflow will take away the rich condition.... I really like the way it runs now except for the dead stop/closed throttle stumble everywhere else it is very smooth ... the light switch throttle response is gone. Quote Link to comment Share on other sites More sharing options...
Northman Posted November 14, 2003 Share Posted November 14, 2003 Adding the K&N should definitely make a difference for you, and you can use it to help tune, also. If the stumble gets better, or leaves altogether, you know for sure it was too rich. If it gets worse, then it's a lean condition. Quote Link to comment Share on other sites More sharing options...
Andy1100 Posted November 14, 2003 Share Posted November 14, 2003 Rule of thumb I was told, was stumble under load=rich problems with no load=lean Then there's the ol, try it with the choke slightly on better=lean worse=rich. Duct tape on the air filter. and it goes on and on. Once you figure out rich or lean, determine where in rpms and throttle position you are to figure out what to make the adjustment to. Pilot, main, needle. Looks like you've got that straight already. When you first crack it. Crack it hard or smooth? Throttle position? Sounds like you could probably take care of it with just an Idle mixture adj. Twist em in an 1/8 and try it. Definately put the K&N in FIRST, and go from there. Quote Link to comment Share on other sites More sharing options...
rickrad Posted November 14, 2003 Share Posted November 14, 2003 pm spEEdfrEEk (TJ) if you are still having problems, he REALLY knows his shit about carbed birds. He bought a carbed bird because he likes to tinker with and tune carbs! Quote Link to comment Share on other sites More sharing options...
Mr.XX Posted November 14, 2003 Author Share Posted November 14, 2003 Thanks, Andy and Rick ect... I will prob put the K&N in tomorrow I am taking her to the shop to have a chain and sprockets installed 16t front and cool air should make for some fun. Quote Link to comment Share on other sites More sharing options...
DaveK Posted November 17, 2003 Share Posted November 17, 2003 Ralph..Sell it ! Quote Link to comment Share on other sites More sharing options...
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