1999 CBR900RR Fuel / Spark problem? - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

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post #1 of 25 Old 11-12-2009, 2:40 PM Thread Starter
 
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1999 CBR900RR Fuel / Spark problem?

I had let my bike sit for 3 months and forgot to run the gas out the carbs before my vacation.

Now it runs rough, need to use more choke to start it. And I feel a surging / misfire at all rpms... It feels completely under powered at higher rpms and really feel the surging above 6k.

Clogged carbs? Spark problem? Thanks for any input.

Also it has 41k miles.
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post #2 of 25 Old 11-12-2009, 2:47 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Remove and disassemble the carbs => spray carb cleaner into everything hole and cranny there is, pull plugs, ground to frame and check for healthy, blue spark.
Drain tank and get fresh gas.
Check fuel filter and lines for flow.
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post #3 of 25 Old 11-12-2009, 3:01 PM Thread Starter
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Yea that's to much work, I called my local shop he will clean and tune for $140 that sounds worth it to me.
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post #4 of 25 Old 11-12-2009, 3:03 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Really? To each their own, but it would only take about 1.5 hours and 3 beers...
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post #5 of 25 Old 11-12-2009, 3:11 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Buy yourself a Haynes Manual.

Sit on the bog in the morning and have a good read - anything they can do you can do too... Might take you longer but at least your not having to rely on stealerships etc.

I'd rather put the $140 to a small parts washer and a few cans of carb spray.. then using a camera (if you need to remember where all the bits go) or make diagrams and count the turns (on the screws etc) I'd just go for it.

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post #6 of 25 Old 11-12-2009, 3:21 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Hey twin, i was wondering how this forum comes about its little smiley face icons and who makes them?

I have a suggestion ; rating jobs by beer.

ex. "this is a 4 beer job" => four little beer icons
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post #7 of 25 Old 11-12-2009, 3:28 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

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Originally Posted by BurtonF166 View Post
Hey twin, i was wondering how this forum comes about its little smiley face icons and who makes them?

I have a suggestion ; rating jobs by beer.

ex. "this is a 4 beer job" => four little beer icons
It would be quite a good gadget to have for the people who like a drink like myself, but what happens about the T-Total ones?

I'd like to think of it being a "Four Crate Job"

"Second is the first of the losers..."
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post #8 of 25 Old 11-12-2009, 3:34 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

After four crates my bike would be missing its tank and front wheel
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post #9 of 25 Old 11-12-2009, 3:37 PM
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Re: 1999 CBR900RR Fuel / Spark problem?

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Originally Posted by Twincam View Post
It would be quite a good gadget to have for the people who like a drink like myself, but what happens about the T-Total ones?
I don't drink and I don't use those stupid smiley things :-)

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post #10 of 25 Old 11-12-2009, 3:38 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

But youre always so close with the :-) bit!
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post #11 of 25 Old 11-12-2009, 3:50 PM
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Re: 1999 CBR900RR Fuel / Spark problem?

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But youre always so close with the :-) bit!
I'm old school :-)

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
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post #12 of 25 Old 11-12-2009, 4:38 PM Thread Starter
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Well I do have the honda shop manual and got all the carbs separated and started to break one down.

Do I have to take out the Main and slow jets out?
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post #13 of 25 Old 11-12-2009, 4:44 PM
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Re: 1999 CBR900RR Fuel / Spark problem?

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Originally Posted by bryckhaus View Post
Well I do have the honda shop manual and got all the carbs separated and started to break one down.

Do I have to take out the Main and slow jets out?
If you want them clean then yes, you would need to remove everything.
But you don't seperate them from the rack unless the connecting pipes are leaking - the manual should have mentioned this.

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post #14 of 25 Old 11-12-2009, 10:50 PM
 
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Re: 1999 CBR900RR Fuel / Spark problem?

This breaks it down for you, wrote it myself. And Bladeracer is very much correct, seperating them is not a good idea unless absolutely neccessary. After you assemble them you may have to sync them. I would've first ran some Seafoam through it, that stuff does wonders.
Carb cleaning 101 - RRZone Forums
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post #15 of 25 Old 11-13-2009, 10:15 AM Thread Starter
 
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Re: 1999 CBR900RR Fuel / Spark problem?

Well I did find a nice size piece of that foam from the little box attached to the air box in one of the carbs. Got it all back on the bike started right up took it for a 10 mile test run on the country roads. I feels like is has more power but I still get some of that misfire feeling. could that be a sync problem?

Also if I try to slip the clutch in 2nd at 9k does not even come close to coming up maybe 3 inches.

I'm going to check the spark right now.
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