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Old 02-01-2008, 10:52 PM   #1
coojo
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Is it alright if...

My bike is running rough and we're trying to avoid disassembling the carburetor unless it's completely necessary. Thinking of unhooking the fuel line pouring some carb cleaner directly into it, let it run through the carbs, then sit for 15-30 minutes, then start it again to clean it out. Anyone know if this is a good idea or why it's a horrible one? (not going to attempt it until tomorrow)
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Old 02-01-2008, 10:53 PM   #2
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Nope, it won't clean the small idle circuit and pilot jet passages.
You really need to pull the carbs and properly clean them.
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Old 02-01-2008, 10:58 PM   #3
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1) year, make and model of bike?

2) define "rough". does it idle? run without choke? is it hard to ride it without it stalling out at slow speeds?

3) how long has the bike been sitting without being run regularly?

if it seems to run fairly ok for the most part, then instead of what you say, i would get a fuel additive type carb cleaner. add it to the gas and try to run it through.

if there is just a peice of trash stuck in the carb, sometimes you get lucky with an additive and it will flush it. but for bikes that have been sitting, or wont idle, etc, a proper dissassemble and clean is the only way to go.

imo its not that hard, but i do it for a living...
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Old 02-01-2008, 11:00 PM   #4
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Hey Chris:

http://www.motohouston.com/forums/sh...ad.php?t=45683
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Old 02-01-2008, 11:02 PM   #5
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Ok, thanks. We actually did this before when we first started working on it and it helped a ton, but the problems now are specifically that it's idling rough and it has been releasing what looks like unburned gas. I assume that means that it cleaned out what it could but left the 2 parts you just mentioned unaffected. My dad wants to try it anyway claiming 'it can't hurt anything'... anything to counter that statement or should I just let him try?
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Old 02-01-2008, 11:05 PM   #6
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it's a 2004 kawasaki ninja 250r, previous owner let it sit for about 5 months,

it needs about 10-15 minutes before it will idle without choke (not sure if that is just because of the cold weather)
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Old 02-01-2008, 11:17 PM   #7
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also, cleaning the carbs doesn't really bug me, but when we tried to order the maintenance manual the shop ordered the user's
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Old 02-02-2008, 12:45 AM   #8
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I offered help already, but here's some more. The 250's idle is very touchy. it has to have clean - clean jets, proper mixture, and properly sync'd carbs to start off with. They take a while to warm up. Get someone who knows about carbs (on bikes) to look at it and ride it, and get their opinion. If you're trying to save time and money by throwing a "magic bottle" of -knows-what in there, then you're wasting your time...and money. If you're looking for a quality job, then talk to Patrick or get it to the dealer. Also, another option is that there are guys on here (MH) that are always willing to help out other MH'ers. Good luck.
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Old 02-02-2008, 06:35 AM   #9
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the "magic bottle" is behrmans b12 carb cleaner heh, thanks, i really want to ask for help, just my dad is touchy about anyone only met on the internet, afraid someone is gonna come molest me
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Old 02-02-2008, 08:11 AM   #10
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we can't be accountable for everyone, but we're a stand-up ground;

come out to some of your local meet and greets, bring him along and make some friends... everyone knows everyone else through some way so at least then there is a contact

good luck w the carb issue, sounds like you got your answers...
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Old 02-02-2008, 05:09 PM   #11
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DO NOT put anything in your carbs.

Just take them off and clean them, but since you are asking this question, I suggest you take them to a shop and have them cleaned for you.

As stated the 250 gets clogged pilots very easy.
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Old 02-02-2008, 06:46 PM   #12
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Then we can come over and molest... I mean help you with your bike.


J/K really you should pull the carbs turn them upside down and take the float bowls off. You will see little machined screw like things with a hole in them (usually gold). Unscrew them carefully, using a good screwdriver so you don't them up.
Those are the jets. Clean them (with carb cleaner if you must) avoid using wire to push thru them as it may gouge up the orifice. If you have to run something thru them use soft wire like from a brass cleaning brush.
Inspect the carbs to see if there are other jets (some carbs have the jets made into the carb body and they may not be removeable).
Put it all back together and reinstall the carbs.

Then when it doesnt run right take it to Motorcycles Unlimited and have them fix it for you. Dirty carbs are bread and butter for repair places because it just aint as easy as people think.
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Old 02-02-2008, 09:09 PM   #13
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My dad got my sister's boyfriend to come over and clean them, unfortunately, I'm taking the course for the M license this weekend and missing out on most of it.
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