CBR 600F 1987 - 1990 CBR 600F Forum

87 cbr600 hesitation.

Old Apr 14, 2013 | 01:24 PM
  #1  
tokenblkguy's Avatar
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Default 87 cbr600 hesitation.

Thanks ahead for any advice. Iv done some sesrching and cant seem to find an answer to my problem. No matter if the bike is cold or hot i get a hesitation from 2-3000rpms but smoothes out after 3000rpms. There is a screw with a black handle that i assume would be the idle adjustment screw? I turned it cause it was backed all the way out so i have it idleling at about 1400rpms (before it was really low) is there a way to adjust the air or fuel to stop the hesitation or anything i should be checking to make sure nothing is wrong. I jist got the bike 3 days ago. It ran great until i decided to drop it at 5mph lol after trying to start it back up several times i killed the battery (it was old anyway) got it charged and now i have this issue. Dont know if its related just thought it would be worth mentioning. Again thanks for any advice you guys can give. This is mmy first bike and it hesitating on a noob while on the road is a scary feeling lol.
 
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Old Apr 14, 2013 | 01:39 PM
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CorruptFile's Avatar
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Hey and welcome.
You are right about the black **** - its a idle control ****. 1400 rpm is a good idle for that bike. As for the hesitation, I'd start with the fuel system. You want to clean the carbs very thoroughly. Clean the jets and make sure there is no gunk leftover. This is the #1 cause of a rough running bike imo. After it is cleaned, you want to sync the carbs. That can cause stuttering/surging if they are too out of sync.

Make sure the fuel is good and fresh.
 
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Old Apr 14, 2013 | 02:15 PM
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Originally Posted by CorruptFile
Hey and welcome.
You are right about the black **** - its a idle control ****. 1400 rpm is a good idle for that bike. As for the hesitation, I'd start with the fuel system. You want to clean the carbs very thoroughly. Clean the jets and make sure there is no gunk leftover. This is the #1 cause of a rough running bike imo. After it is cleaned, you want to sync the carbs. That can cause stuttering/surging if they are too out of sync.

Make sure the fuel is good and fresh.
Is this a one man job or will i need help. Im good with cars so i dont tthink a bike can be any harder as long as i have tools. Will i need to pull the whole motor out to remove the carbs or can they stay on the bike
 
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Old Apr 14, 2013 | 04:44 PM
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Hi dude

I did this for the first time myself a few months ago. The engine can stay where it is. First task is to download the free honda service manual at the top of this bike's threads it's brilliant and will tell you much better than I can how to do this job and many others.

Very basically cuz I'm new to bikes too, to get the carbs out -

Remove fuel tank

Remove airbox and the hoses attached

Detach fuel inlet pipe to carbs at the t-junction before it splits into 4

Loosen up the clamps on the rubber boots that join the carbs to the engine

Carefully lever the carb bodies out using a length of 1x2, wd40, wriggling and patience

I think I put a vid or two refering to pulling the carbs and cleaning them on youtube a while ago (walkerrog25) which might help you visualise what they look like inside at least.

Good Luck
 
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