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carb problems again?!


bar10dah

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I bought my '98 XX in Dec '02 with 13K on the clock. I put 15K on it for

the next eight months.

So now we're at 25K in Aug '03. I rode my bike about a mile and stop at a

friend's house. I notice fuel spilling out from underneath the bike. I

took the bike to the local Honda shop for troubleshooting. The mechanic

tore into the bike and called me to tell me I needed the carbs cleaned.

While in there, I had him install my Factory jetkit.

So carb cleaning, new gaskets, rejetting, and $430 later my bike ran

beautifully! At least, for the next 6K and 15 months.

Now we're at 31K and Nov '04 and my bike starts to run like crap. It seems

to idle fine, but when I start to roll on the throttle, it makes a strange

rumbling noise like it's missing. I keep rolling on and the bike starts to

hesitate but slowly accelerates. I get into higher RPM's and the bike runs

fine.

I bring the bike home and pull the tank up. I see a small amount of fuel

coming off the runoff from #3 and #4. Not much, but fuel nonetheless. I

pull all four plugs and the first three look fine. #4 is black.

Another carb problem?! Something else?! WTF!!

http://www.speedextreme.com/keith/carbs.jpg

http://www.speedextreme.com/keith/plugs.jpg

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You have a problem with the carb that sooted up the plug. If it were ignition, you'd have a pair of plugs messed up the way our coils work.

Black = RICH so I would think your slide might be sticking a bit till the engine pulls enough air to open it up when it runs OK.

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Just went for a 30 mile jaunt. Lots of throttle variations. From idling to ludicrous fast. The problem is gone! WTF?!

So, if it's a stuck float do I run some carb cleaner such as Techron in there? Or is it beyond simple fix and I'll just have to get it cleaned and rebuilt?

Fixable? Or time to trade her in for a new XX?

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I'd run a tank or two with some cleaner through her. Should be fine unless the problem persists then a complete rebuild probably won't be necessary. If it does it again, check the plugs again. If it's the same plug, you probably got a sticky float or slide in that particular carb. Shouldn't need a rebuild in 6K.

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Techron is some really good stuff, my personal favorite is 44K. I use to get bottles of it free from work  :lol:  

$20 a pop but well worth it.

2nd that, 44K is the best stuff out there no doubt about it.

Techron is good, though. It's much more of a maintenance type of product, keeps it clean...

Bar10dah,

I'd start using Techron at every oil change, if I were you. Just run it thru once or twice before each oil change, keep the rest of the bottle in the garage for next time, or run it in the car. If you're having chronic problems like this, they may be avoidable with a $7-8 fix.

One thing to remember, most fuel system cleaners are like prescription drugs, don't run them in more concentration than the bottle recommends. Most of this shit cleans off the carbon from valves, and you don't want big ass chunks of carbon, you want little bitty ones.

J.

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