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Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

Thread: '00 929 idle questions Reply to Thread
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  Topic Review (Newest First)
07-31-2012 9:39 PM
bladeracer
Re: '00 929 idle questions

Quote:
Originally Posted by eric8 View Post
I haven't tried the TB boots yet. Did your symptoms worsen as the fprwent bad? Wouldn't a vacuum leak there actually make it run leaner rather than richer?

It's not a vacuum leak. The vacuum line sucks the FPR diaphram open. When the diaphram fails fuel is pumped down the vacuum line by the 50psi pressure of the fuel pump.
07-31-2012 9:09 PM
crazie929
Re: '00 929 idle questions

Well actually it was intermittent. Some days it idled smooth, others it was rough. It finally came down to th fpr crapping out completely. If ur fpr isn't leaking, maybe u also have some bad plugs.
07-31-2012 8:33 PM
eric8
Re: '00 929 idle questions

I haven't tried the TB boots yet. Did your symptoms worsen as the fprwent bad? Wouldn't a vacuum leak there actually make it run leaner rather than richer?
07-31-2012 8:04 PM
crazie929
Re: '00 929 idle questions

I think my rough an rich idle was an fpr that was going out slowly. When it finally crapped out, it was pissing fuel. But it wasn't initially. Have u checked for leaks around th tb boots?
07-31-2012 7:43 PM
eric8
Re: '00 929 idle questions

Crazie,

I found your post while searching for the symptoms my bike is having. I wouldn't say mine runs BAD, but I've ridden bikes long enough to know that something just isn't 100%. I, too, can tell my bike is running slightly rich at idle (I smell it) and the low rpm part throttle response is sloppy (slight bucking, jerking). The idle isn't too smooth either.....sounds lumpy (is that a word?)

Anyway, just curious what made you change the FPR? I thought in an earlier post that you had ruled that out? I'm assuming by disconnecting the vacuum line and verifying that it wasn't pissing fuel? What made you decide it was bad? Mine FPR is bone dry when I disconnect the vacuum line and pressurize the fuel rail.

FYI, my bike is 100% stock with 10K miles. 2001 model.
04-06-2012 2:29 AM
crazie929
Re: '00 929 idle questions

yup its a bad FPR. a new one i jus ordered will solve that
04-04-2012 11:11 PM
crazie929
Re: '00 929 idle questions

plus the exhaust is rich at idle
04-04-2012 11:06 PM
crazie929
Re: '00 929 idle questions

decided to bump this since it has to do with rough idling. i turn my bike on this morning and immediately notice the rough idle. after it warms up the rpm's drop to 1k. i give it a little throttle and the rpms go back to 1300 but its still rough. riding in all gears is smooth, no surge or bucking. its only at idle. im guessing its the FPR. sorry for not diagnosing first, i jus wont have time till the weekend. for those of you that have had issues with the FPR, is a rough idle one of them?
01-30-2012 10:46 AM
crazie929
Re: '00 929 idle questions

Update: I checked out all possible areas that might cause a rough idle but it all checked out good. Fpr good an no immediate air leaks. I've ran a can of sea foam and regularly use Sta-bil. Didn't attempt to sync throttle bodies cuz I don't kno how n didn't wanna make things worse. Bike is idling steady at about 1300 rpm. I was jus more careful adjusting th throttle stopper. I prob moved it too hastly th first time. But its all good now.
01-28-2012 8:58 AM
bladeracer
Re: '00 929 idle questions

Quote:
Originally Posted by jondog9 View Post
I have no idea if it's an illegal copy. If you know that it is, then I wont use it anymore. I kind of doubt it and never even thought of it since these bikes are a decade old. Sorry. If I'm doing something wrong here, it's not intentional. And no it isn't easy enough to find some of these manuals. I still don't know about, or use torrents, and my search effors for manuals in general is never easy. That's why I pass a couple of them along.

Just to clarify, unless a manual (or any other published work) includes the statement in writing that it is for free distribution, then to distribute it is illegal under copywrite law.
I collect them and have distributed many myself to people that can't find them themselves, but not via this forum that quite rightly and actively enforces copywrite laws.
01-28-2012 2:29 AM
jondog9
Re: '00 929 idle questions

Quote:
Originally Posted by bladeracer View Post
I didn't check the link but I assume it is to an illegal copy of a service manual?
I have no idea if it's an illegal copy. If you know that it is, then I wont use it anymore. I kind of doubt it and never even thought of it since these bikes are a decade old. Sorry. If I'm doing something wrong here, it's not intentional. And no it isn't easy enough to find some of these manuals. I still don't know about, or use torrents, and my search effors for manuals in general is never easy. That's why I pass a couple of them along.

Quote:
Originally Posted by sj66 View Post
This generation fuel goes off so if it's been sitting for that long the throttle bodies might be gummed up had a similar problem with my project bike
Not sure what you mean?

I don't know how many spray nozzles your injectors have on the 929, but on my bike it's 4. And the spray pattern results in larger atomization breakdown, then say the next generation which has slightly bigger throttlebodies but 12 smaller spray jets for smaller atomization. Which means smaller orifaces - that might clog a little quicker than a bigger one. Old gummy gas is an enemy for sure. If it's gone that far. Hopefully not...
01-28-2012 12:19 AM
sj66
Re: '00 929 idle questions

This generation fuel goes off so if it's been sitting for that long the throttle bodies might be gummed up had a similar problem with my project bike
01-27-2012 7:20 PM
bladeracer
Re: '00 929 idle questions

Quote:
Originally Posted by crazie929 View Post
What was illegal about it?

I didn't check the link but I assume it is to an illegal copy of a service manual?
01-27-2012 7:11 PM
crazie929
Re: '00 929 idle questions

Quote:
Originally Posted by bladeracer View Post
Please don't post links to illegal materials on this forum.
If people want manuals they're easy enough to find via Google or Torrent.
What was illegal about it?
01-27-2012 7:06 PM
bladeracer
Re: '00 929 idle questions

Quote:
Originally Posted by jondog9 View Post
I have no idea how to sync the throttlebodies. I've never had issue to do that. Shows you what I know, I didn't even know to sync throttlebodies. I thought that was just a carb thing. It sure sounds like the fpr to me, but after sitting for a year...


You may need to register with this site to get the download, but it's no hassle at all.

929 SvcMan

Please don't post links to illegal materials on this forum.
If people want manuals they're easy enough to find via Google or Torrent.
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