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Discussion Starter #1
so over the past few months i've been having problems with my bike. here's the situation, if i snap the throttle in any gear and watch the revs climb, they do so smoothly up until 10k (give or take 1000) then the engine bogs and begins to loose its revs and slow down every so slowly. if i back off the throttle the engine 's revs will slowly climb again..or just keep a constant speed.

now, anything under 10k, the bike responds as it normally would.

the bike has around 36,000kms on the odometer.
i just replaced the plugs and air filter, checked all the hoses under the tank and everything is kosher.

i brought it down to honda, we pluged the bike into a diagnostic machine and no errors came up.

can anyone think of something that could be causing this?
 

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Discussion Starter #2
just to fill people in on this problem, i was able to resolve it by getting a new fuel pump.

somehow the original one wasn't shooting enough fuel, which i diagnosed by doing a fuel flow test.
 

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Did you installed the pressure guage and test drive the bike while reading the fuel pressure when the problem occured? what was the reading and at what rpm's did it mess up? Im having the same problem with mine. How much was the fuel pump? Mine will actually die after getting on it hard and letting off the throttle fast. It will start to miss if i roll the throttle off easy.
 

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Discussion Starter #4
well here's another update. i thought swapping the fuel pump solved it, but i was wrong. the issue still exists.

actually my bike never dies when i'm riding it. if i open the throttle half way the revs will slowly climb past 10k. however if in any gear, i open the throttle all the way, it revs to 10k and bogs around there...

oh niko, i got the fuel pump from a local seller that had parts off a race bike.

F U Q! i need help asap.
 

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:[ ....

I think when the bike hits the secondary injectors the bike start to act up like its laking fuel? Now thats what my bike feels like. I am still messing with the bike to see if i can figure it out. Let me know if you find whats wrong with it and i'll do the same. Thanks
 

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m/f battery........

Hey I finaly got my bike fixed. It was the Battery. The battery that i have its the original and it test fine and holds charge with no problem but when its under load voltage it gives out. It probably has a dead cell in there. I replaced my battery and went to the high way to test drive and it didnt skip a bit or died or anything. Try that. do you have a power commander on your bike? I have one on mine and i had taken it out to see if it was that and i guess i will have to put it back on. I had called tech line for power commander and they dodnt have a problem with them. they say to check for connectors, rust on injector plugs, ground all the connectora on the PC unit. Hope you get your bike rinning right. One more thing. I did find a crack on one of the 4 hoses that goes from the map sensor to the sincronizers at the throttle bodies. Repair the small leak and idles a lot better. I did see that after i test drove the bike for the hessitation.
 

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Problem was with the power commander and part of it was the battery on my bike. If I had to do it again I would have started by disconnecting the power commander and test driving it first them if it still was messing up i would have installed a new battery and leaving the PC off the bike. If it all quit by doing all of that i would install the PC back on and re test driving it making sure that i was the PC making all of the problem. Well i will have to send the PC back to them and see if they can repair the problem.
 

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Discussion Starter #9 (Edited)
well...my update.
i dont have a PC, so that cant be an issue. Something i did notice is when the problem is occuring, i can replicate it even if the bike is not moving. ie/ the bike will be warm and idling, then i'll snap the throttle fully open, it'll bog a second or two, then climb in revs. Im starting to think that it's something to do with the fuel delivery, such that the bike is running too rich and floods it, hence the lag.

The problem is becoming impossible to diagnose because of its irregularity.

i ripped the bike apart, checked ALL my injectors, primary and secondary, all was good and clean. checked lines, wires...etc..all good again.

i'm going to check the battery today. i cant believe if this solves the problem. i'll be vexed!!!!

something i did notice when i took apart my airbox is i have little sticky area's of oil that must be coming out by the intake stacks.... normal on everyones 03 600rr? Can someone tell me how to diagnose a 'rich' mixture, or how to adjust it?
 

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dennislo.com said:
something i did notice when i took apart my airbox is i have little sticky area's of oil that must be coming out by the intake stacks.... normal on everyones 03 600rr? ?
well i dont have a 03 but a 04,and i had oil too not alot but some spots. i as well asked here and they dont me it was normal to have so stops of oil. so yeah
 

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Even though you say you swapped the fuel pump with a used one the symptoms you're describing still say you have a fuel starvation problem. (i.e. low fuel pressure) You need to hook the pressure gauge up and see what the pressure is running. You could also have a bad pressure regulator. Have you checked the screen inside the tank? Make sure it's not clogged. Have you ran a fresh tank of gas through it?
 

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Discussion Starter #12
NewRedRider said:
Even though you say you swapped the fuel pump with a used one the symptoms you're describing still say you have a fuel starvation problem. (i.e. low fuel pressure) You need to hook the pressure gauge up and see what the pressure is running. You could also have a bad pressure regulator. Have you checked the screen inside the tank? Make sure it's not clogged. Have you ran a fresh tank of gas through it?
Yes i checked the pressure and flow of the old fuel pump, which was defective, and replaced it with this used one, which after the test showed it was working to spec.

Where's the pressure regulator? How can i check it?

which screen inside the tank? when i took out the fuel pump, the tank was just a big bucket.

since diagnosing this problem last november, i've done about 3000km, with many new tanks of gas. the problem is sometimes there, other times not.
 

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dennislo.com said:
Yes i checked the pressure and flow of the old fuel pump, which was defective, and replaced it with this used one, which after the test showed it was working to spec.

Where's the pressure regulator? How can i check it?

which screen inside the tank? when i took out the fuel pump, the tank was just a big bucket.

since diagnosing this problem last november, i've done about 3000km, with many new tanks of gas. the problem is sometimes there, other times not.
Here you go..

 

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doofiep007 said:
Mine just started doing the same thing...smells rich. Any new ideas?
Be more specific. Have you gone through all of these suggestions? "Smells rich" sounds like a different problem.
 

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Ok, I dont want to say mine is doing the same but I do get a surging feel when I attempt to quickly accelerate from any gear above 9k rpm. I can power thru it to 13k but there is an almost bucking feeling. It started late last year and i actually thought that it was the bald worn out tire on the rear. The closet description I can give is if a tire looses grip and then regains its. that jerky motion. Any ideas?
 

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I swapped the ECM from my track bike and it's doing the same thing...surging/bogging at/after 10k rpm...swapped the battery too. Pressure guage on the fuel rail will be done on sunday. Runs great until I hit 10k
 

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Is the MIL indicator light on and the FI light in the cluster when riding? If those indicators are on the bike is showing that it has a problem and will go into a "safe mode" so that the bike still runs but not properly. I had this recently when my speed sensor was disconnected and basically as I hit turn one out of pits the light would come on and the bike would run like crap (jerking between 9 and 10K and then again between 13 & 14K and after that no power at all). Fixed the problem and the bike ran like a charm afterwards.
 
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