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Old 06-03-2009, 06:48 PM   #1
cbr600F4
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Question Help needed!

I am having a problem with my 99 cbr600f4. Seems like thats all I have with this thing

The bike is running very rich. I can tell by the smell and how rough it runs, almost sounds as if it is out of timing. I checked to see if I was a cylinder down by starting it up and feeling each of the pipes coming out of the engine. All got hot enough to where I couldn't touch them with in +/- 30 seconds. I tried adjusting the carb, all that did was make the idle go up and down, not sound any better. My carbs should be plenty clean. I had them jetted awhile back and have since put 2 tanks of gas through them. I have new plugs in, so I don't think it could be that. The only thing I have change is I put a intergated tail light on. Soon after that, the bike started running the way it is now. I guess I will leave it at that, start shooting me some questions, and maybe we can get to the bottom of this.

Thanks guys/gals
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Old 06-03-2009, 06:51 PM   #2
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carbs are dirty adjusting the idle will not solve anthing except give you a natural cruise control.
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Old 06-03-2009, 06:59 PM   #3
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Quote:
Originally Posted by BigComfy View Post
carbs are dirty adjusting the idle will not solve anthing except give you a natural cruise control.

I agree, I wasn't adjusting the idle tho, I was adjsting the fuel/air ratio screws
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Old 06-03-2009, 11:48 PM   #4
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Quote:
Originally Posted by cbr600F4 View Post
I agree, I wasn't adjusting the idle tho, I was adjsting the fuel/air ratio screws
are they all set the same abount of turns and how many turns did you take them out?cause what you have a is a carb prob. also you might just need a carb sync
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Old 06-04-2009, 12:54 AM   #5
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+1 on the carb sync - try some SeaFoam 1st, then have them sync'd. Then ride the snot out of it - worked for mine.
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Old 06-04-2009, 07:23 AM   #6
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Quote:
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+1 on the carb sync - try some SeaFoam 1st, then have them sync'd. Then ride the snot out of it - worked for mine.
On a carb sync, would I tighten the screws all the way down and back them out at the same rate??

I know I would rather take it in to do this. But I need to do it on my own. Getting married and a child on the way is eating my money.
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Old 06-04-2009, 07:28 AM   #7
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Quote:
Originally Posted by cbr600F4 View Post
On a carb sync, would I tighten the screws all the way down and back them out at the same rate??

I know I would rather take it in to do this. But I need to do it on my own. Getting married and a child on the way is eating my money.
your gonna have to buy the tools to do it yourself. if you dont them just clean the carbs and bring your bike into a shop that does. it should minimize your expense and youll more than likely be allowed to watch and learn if your super duper nice to them.
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