CBR 600F3 1995 - 1998 CBR 600F3 Forum

So got it running! But....

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Old Jun 16, 2010 | 04:03 PM
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Default So got it running! But....

So i got the bike running and here is whats happening...

Got it fired up no problem, but running like crap, when on full choke it fires up and idles at 4000 rpm, and then give it any gas and it shuts off.

When you sometimes get it started off of choke it still idles at 4k rpm and you can rev it up no problem, when you start driving it and hit a bump or something it will just shut off.

I cant figure out exactly what it is? Any more idea? Thanks guys for all the help.
 
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Old Jun 16, 2010 | 10:22 PM
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Old Jun 17, 2010 | 01:19 PM
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have you pulled the carbs and cleaned them yet? if it isnt idling without choke and/or dies when you hit the throttle, it sounds like the slow jets in the carbs are clogged. id pull them and get to cleaning....
 
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Old Jun 17, 2010 | 01:23 PM
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is there an easy way to clean them? (ie: without removing them?)

ive only done a few "mechanical" things to my bike myself like replace the starter motor (easy enough) but im afraid pulling apart that stuff is a whole nother story.

btw i have similar issue at low speeds and pretty sure its my carbs but cant afford to pay $300+ for a shop to clean/sync them.
 
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Old Jun 17, 2010 | 01:29 PM
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Originally Posted by andyriot
is there an easy way to clean them? (ie: without removing them?)

ive only done a few "mechanical" things to my bike myself like replace the starter motor (easy enough) but im afraid pulling apart that stuff is a whole nother story.

btw i have similar issue at low speeds and pretty sure its my carbs but cant afford to pay $300+ for a shop to clean/sync them.
at least it was 300, hell my neighborhood mechanic wanted like 700 bucks
 
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Old Jun 17, 2010 | 01:43 PM
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its not tough. pull the tank. the airbox cover, the filter, the lower half of the airbox, both heater tubes, fuel line, right side hanger plate, choke cable. loosen the 4 carb to head boots, disconnect the throttle cables then bam! its out...then you drain the fuel bowls, take the fuel bowls off, pull the floats and jets, soak the jets in carb cleaner, spray the crap out of all the passages, and make sure to use a guitar string or something of the like to manually push through the passages and jets
 
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Old Jun 17, 2010 | 01:50 PM
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Originally Posted by Will.Bass
its not tough. pull the tank. the airbox cover, the filter, the lower half of the airbox, both heater tubes, fuel line, right side hanger plate, choke cable. loosen the 4 carb to head boots, disconnect the throttle cables then bam! its out...then you drain the fuel bowls, take the fuel bowls off, pull the floats and jets, soak the jets in carb cleaner, spray the crap out of all the passages, and make sure to use a guitar string or something of the like to manually push through the passages and jets
yeaaah you passed where ive been when you said lower half of the airbox, lol.

that doesnt sound incredibly difficult, but rather involved yeah? im not even sure what some of those things are... heater tubes? disconnecting choke and throttle cables... that sounds like a ****up waiting to happen? and past that i dont know a damn thing about bowls and floats and jets...

im mechanically inclined, but this seems like a pretty daunting task. maybe im thinking its worse than it really is. i wish there was a step by step video or something to that effect.
 
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Old Jun 17, 2010 | 02:22 PM
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Does it start back up after you hit a bump? The full choke and adding throttle thing is normal after a bike not running for a while.. Mine did it yesterday cuz it was the first time I started it after a month or so. Once i let it warm up, i could take off the choke and it would idle just fine after I adjusted idle screw..

As far as the bump thing, sounds like you either have a loose wire or one that shorts out the ignition as it flies up because of the bump..

Try small simple stuff like that before you go drastic and end up pulling engine/cleaning carbs/etc just to learn it was a loose wire.

Might try posting a video to show us exactly what you're talking about
 
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Old Jun 17, 2010 | 04:59 PM
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Originally Posted by andyriot
yeaaah you passed where ive been when you said lower half of the airbox, lol.

that doesnt sound incredibly difficult, but rather involved yeah? im not even sure what some of those things are... heater tubes? disconnecting choke and throttle cables... that sounds like a ****up waiting to happen? and past that i dont know a damn thing about bowls and floats and jets...

im mechanically inclined, but this seems like a pretty daunting task. maybe im thinking its worse than it really is. i wish there was a step by step video or something to that effect.
a bit involved, kinda. but once you see everything your working with, its not difficult, you learn and understand whats going on. and the heater tubes are hoses that run engine coolant through the carbs to warm them up...if you download the service manual, it is step by step for disassemly and reassembly
 
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Old Jun 17, 2010 | 07:30 PM
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Down-loadable manuals - https://cbrforum.com/forum/stickies-91/online-manual-112265/
 
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