CBR 600F2 1991 - 1994 CBR 600F2

rpm's up and down

  #1  
Old 04-29-2016, 04:25 PM
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Default rpm's up and down

hello,
I have a 93 cbr 600 f2 and the rpm's changes sitting idle. they just goes up and down without me throttling it. it happens mainly when come up to a stop sign/ traffic light. please advise.

thanks
 
  #2  
Old 04-30-2016, 07:22 PM
Phil314's Avatar
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Default

More information please.

Did it just start doing this?
Does it do it when the choke is on?
Has the bike been stored a while?
Have you recent done any work on it?
Do you ever smell fudge when there isn't any fudge around?

Might be running lean. Could be a vacuum leak, petcock hose or cracked carb boot, or plugged carb.
 
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