900RR Help Please!!!!!! - 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 8 Old 04-30-2011, 12:21 AM Thread Starter
 
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900RR Help Please!!!!!!

Been a long while since I've posted here. Anyways, I'm having an issue with my wife's 900 that I can't figure out. It'll start and idle but nothing more, the moment you give it gas it'll die.
I know that my R/R is going out and I already have a new one ordered and on it's way. As for the rest of it, I've replaced the spark plugs, done every test for the ignition system according to the manual and everything's good. So now I'm at a complete loss as to what it could be. Does anyone have an idea?
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post #2 of 8 Old 04-30-2011, 1:46 AM
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Re: 900RR Help Please!!!!!!

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Originally Posted by Atreyu View Post
Been a long while since I've posted here. Anyways, I'm having an issue with my wife's 900 that I can't figure out. It'll start and idle but nothing more, the moment you give it gas it'll die.
I know that my R/R is going out and I already have a new one ordered and on it's way. As for the rest of it, I've replaced the spark plugs, done every test for the ignition system according to the manual and everything's good. So now I'm at a complete loss as to what it could be. Does anyone have an idea?


This just happened overnight?
When you say "give it gas" you mean rolling open the throttle right?
That actually gives air not fuel. Is it the same even if you very carefully open the throttle?
What happens if you spray some starter fluid into the intakes while it's idling?
What did the old plugs look like?

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post #3 of 8 Old 04-30-2011, 2:06 AM Thread Starter
 
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Re: 900RR Help Please!!!!!!

Sorry no it didn't happen over night, I'm military and I'm not always around, well I'm finally home and have some time to work on it.
Yes I mean rolling open the throttle, doesn't matter how careful I am it dies.
The old plugs looked like ****. I'll post a pic in the morning.
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post #4 of 8 Old 04-30-2011, 4:00 AM
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Re: 900RR Help Please!!!!!!

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Originally Posted by Atreyu View Post
Sorry no it didn't happen over night, I'm military and I'm not always around, well I'm finally home and have some time to work on it.
Yes I mean rolling open the throttle, doesn't matter how careful I am it dies.
The old plugs looked like ****. I'll post a pic in the morning.


Depending on how long it's been sitting maybe you just need a carb rebuild.

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post #5 of 8 Old 04-30-2011, 5:13 AM
 
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Re: 900RR Help Please!!!!!!

That is where I was heading too. The choke circuit might also be stuck open a tad.

Last edited by vfrman; 04-30-2011 at 5:13 AM. Reason: chock = choke
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post #6 of 8 Old 04-30-2011, 5:21 AM
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Re: 900RR Help Please!!!!!!

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Originally Posted by vfrman View Post
That is where I was heading too. The choke circuit might also be stuck open a tad.

It should still take throttle though, especially when cold.

Opening the throttles simply increases airflow. That increased flow then draws more fuel out of the float bowls as required for a burnable mixture. If the jets are blocked so it doesn't get the extra fuel then it'll go far too lean to run.

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post #7 of 8 Old 04-30-2011, 1:04 PM Thread Starter
 
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Re: 900RR Help Please!!!!!!

That makes sense.

No it doesn't take any throttle, not even the slightest bit, cold or hot. I can pull the choke out and it'll idle fine, when the bike warms and the choke starts to go in, it starts running rough, after a min of no choke it dies.

I can see from sitting too long that the carbs might need to be rebuilt, was just hoping not to have to go that far.
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post #8 of 8 Old 05-01-2011, 1:33 AM
 
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Re: 900RR Help Please!!!!!!

i have had some luck with running some Seafoam through the carbs to clean some of the crud out of the jets, run a tank of gas mixed with seafoam through it and see if it gets better.

If it does, then the carbs are plugged up and need a good rebuild.

seafoam is pretty expensive, and so is a tank of gas, but it could help to steer you in the right direction if your thinking it still might be something else,

but i say dont waste your time and tear into the carbs. It definitely sounds like your carbs are gummed up.

Good luck!
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