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Limited rpms

  • Thread starter Thread starter dearnhardt7
  • Start date Start date
D

dearnhardt7

Guest
I have a 85 GS450L...just swapped motors (another 450) and I can not get rpms over 4500 at full throttle. I took carbs off a good running 450 ..so I know its not a fuel or carb problem...I am at my wits end on this...any help would be much appreciated. Thank you.
 
Any mods on the bike? Missing airbox or not hooked up. Stock exhaust or modified? Carb jetting?
 
Not sure what to suggest. A bad ignitor can limit rpm, a stuck mechanical advance might, carb issues can do it but you say that's not a problem, lack of fuel in the float bowls is another thing to check. Start with the basics and start crossing off things.
 
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