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Fine tuning the mid range

  • Thread starter Thread starter countrycummins99
  • Start date Start date
C

countrycummins99

Guest
Ok carbs all rebuilt all new o rings including the ones between the head and carb boots now I have a stumble around 6500rpm if you get past it the it runs great was curious if the needle height is the key to eliminating this or is there something I am missing
 
Also is there a way to tell if its a lean stumble or a too rich stumble I believe it to be a to lean stumble but if I raise the needle it doesent get better should I try the stock needles?
 
Better yet anyone live in northeast pa who wants to take a crack at this I'm stumped
 
do a mid range plug chop and see what colour the plug is. that will tell you if it is to rich or to lean
 
well thats the only way to tell if it is rich or lean so it looks like you are stuck with guessing and see what happens
 
Would running it right in the rpm range before it breaks up and doing the chop test there show anything? What about all the other things I suggested no other input? Or suggestions
 
I use the choke- if nothing happens when you hit it at the stumble point- your already rich.
 
nice

nice

good idea ill try that i am thinking the main jets are too large now might drop down to the 114s if thats the case

Badooka said:
I use the choke- if nothing happens when you hit it at the stumble point- your already rich.
Click to expand...
 
cowboyup3371 said:
What was the fix?
Click to expand...
Evidently, just a lot of guessing.
icon_shrug.gif


.
 
fix was puting in the smaller jets that came with the dynojet kit moving the needle all the way up and removing the access door to the air box now it runs just a minuet amount rich. took a bike course with it on sunday and been riding it the past two days its great. no guessing just continual testing to achieve the correct solution
 
Thanks for coming back and posting the results. Until we saw what you did, the only thing we had to go by was a lot of guessing and questioning.

.
 
no problem it was only after alot of help form you all that i got the right answer just wish the kit had some smaller needles i am guessing this kit was designed around having pods on the bike not a k and n factory replacement
 
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