Dying at 7k RPMs! - 600RR.net
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post #1 of 21 (permalink) Old 02-02-2009, 09:04 PM Thread Starter
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Dying at 7k RPMs!

Maybe you guys can help me with an ongoing problem i'm having with my 03.

While riding, usually 3rd gear and up, the bike dies at 7k-9k rpms. It requires me to start it again. Rides fine under those rpms generally.

I put it up on stands (and i know this is terrible for it...) but i ran it in third at 7k rpms and it sounds like it's missing or something. you can hear the exhaust gurgling. It doesn't die though so i assume the gurgling engine trips a sensor and kills it under load.

What I've Done:
-New Battery
-New Voltage Regulator

Possibilities:
-clogged fuel pump
-clogged oil pump or line
-bad TPS?
-problem with the second set of injectors

What do you guys suggest?

Thanks,
Kyler



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post #2 of 21 (permalink) Old 02-02-2009, 09:13 PM
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Sounds like another fuel pump problem... this seems to be happening alot to 03-06 CBR's lately.

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post #3 of 21 (permalink) Old 02-02-2009, 09:25 PM
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have you had the tank up or off recently? maybe a pinched fuel line. is the FI light coming on?

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post #4 of 21 (permalink) Old 02-02-2009, 10:26 PM Thread Starter
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FI light only comes on while it's on the road and it dies. But it did not come on when i had it up on the stands.



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post #5 of 21 (permalink) Old 02-02-2009, 10:27 PM Thread Starter
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fuel Lines are not pinched



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post #6 of 21 (permalink) Old 02-02-2009, 10:29 PM
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hmm i'd check to see what the trouble code is for the FI light... then go from there

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post #7 of 21 (permalink) Old 02-02-2009, 10:38 PM
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sounds like a loose connection to the battery. Or a loose ground wire. If it was a bad fuel pump... the bike wouldn't die... it just wouldn't rev any higher.

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post #8 of 21 (permalink) Old 02-02-2009, 10:43 PM
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^^^ kinda what i thought at first but he said he replace the batt. so i assumed he made sure all that was tight

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post #9 of 21 (permalink) Old 02-02-2009, 10:48 PM
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Never had a bike in limp mode before so i don't exactly know how it acts, but is that a
possibility? Just a thought.

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post #10 of 21 (permalink) Old 02-02-2009, 10:50 PM Thread Starter
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limp mode?



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Bring a spare clutch lever and drive it through his heart. It's the only way to kill a bike thief."-ZachRR
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post #11 of 21 (permalink) Old 02-02-2009, 10:50 PM Thread Starter
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all connections are tight on the battery as well



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post #12 of 21 (permalink) Old 02-02-2009, 10:52 PM
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pull of the left midfairing... all the ground wires connect to one bolt by the fuse box.

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post #13 of 21 (permalink) Old 02-02-2009, 10:54 PM
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Limp mode, yeah. It's my understanding that when certain things go wrong/fail on the
bike the computer can recognize it and it will limit the bikes capabilities as to keep it
from tearing itself up. Hang on, i'm gunna do some quick research because i really am
just kinda blowing smoke right now, i don't really know anything about it other than it
will limit your rpm's.

03' 600RR Movistar, Full Yosh RS5, Rumble Concepts,
LED Flushies, CA Integrated Taillight, Custom FE, Rumble
Concepts Flasher Relay, Stompgrips, Pazzo Shorties, DDM HID's,
520 Conv. w/ Driven sprox -1+2, Speedohealer, SS Goodridge
front lines, Woodcraft frame sliders, R&G forksliders, BMC
Street, Puig Double Bubble, HID cutoff switch in toolbox,
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post #14 of 21 (permalink) Old 02-02-2009, 11:04 PM Thread Starter
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thanks... 10 char



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post #15 of 21 (permalink) Old 02-02-2009, 11:09 PM
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Hmm... well i've yet to find any good information on the limp mode. Basically what i'm
getting is that your bike goes into limp mode any time your FI light is on. Your idle will be
rougher and the bike will run relatively poorly. As for cutting off the RPM's i couldn't find
a definit number. Sounds like your problem lies in something else, but what do i know.

03' 600RR Movistar, Full Yosh RS5, Rumble Concepts,
LED Flushies, CA Integrated Taillight, Custom FE, Rumble
Concepts Flasher Relay, Stompgrips, Pazzo Shorties, DDM HID's,
520 Conv. w/ Driven sprox -1+2, Speedohealer, SS Goodridge
front lines, Woodcraft frame sliders, R&G forksliders, BMC
Street, Puig Double Bubble, HID cutoff switch in toolbox,
Custom tag bracket, Lots of black Powdercoat, CRF450R
rear master mod

Link to my build thread - https://www.600rr.net/vb/showthread.php?t=124433
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post #16 of 21 (permalink) Old 02-02-2009, 11:17 PM Thread Starter
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its not that it runs poor. it just dies after i try to accelerate, runs fine underneath 7k rpms.

i'm having the damndest time solving this problem. won't seem to go away.

from what i read, actual limp mode would make it hard to go anywhere at all. it would just run like ****. period. then again i'm no expert.



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post #17 of 21 (permalink) Old 02-02-2009, 11:19 PM
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Yeah, i'm with you on that. The no expert part. Might as well keep checkin your electrical
connections until someone who knows what goin on pipes in.

03' 600RR Movistar, Full Yosh RS5, Rumble Concepts,
LED Flushies, CA Integrated Taillight, Custom FE, Rumble
Concepts Flasher Relay, Stompgrips, Pazzo Shorties, DDM HID's,
520 Conv. w/ Driven sprox -1+2, Speedohealer, SS Goodridge
front lines, Woodcraft frame sliders, R&G forksliders, BMC
Street, Puig Double Bubble, HID cutoff switch in toolbox,
Custom tag bracket, Lots of black Powdercoat, CRF450R
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post #18 of 21 (permalink) Old 02-03-2009, 11:56 AM
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did you check the ground wires yet?

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post #19 of 21 (permalink) Old 02-03-2009, 12:51 PM
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+1 to dcope, if all that is fine I'd be looking at the fuel filter and secondary injectors next - ohm out the injectors and see if one is way out of range - the secondarys are't all the way on till 5800-7k RPM (assuming the bike doesn't pull fine past 7k in first for example)
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post #20 of 21 (permalink) Old 02-04-2009, 02:58 PM Thread Starter
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i'll check these



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Bring a spare clutch lever and drive it through his heart. It's the only way to kill a bike thief."-ZachRR
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post #21 of 21 (permalink) Old 02-04-2009, 05:23 PM
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I don't think a bad fuel injector will completely kill the engine. If the injector is bad... it wouldn't give fuel or give the wrong amount. If the injectors are good enough to keep it running at 6K why then would it not start working ( working at least good enough to keep running) when the R's dropped back to 6K? Theses are good ideas but for a bike to run fine till 7K then completely die... sounds like a bad connection. Something is turning off the ECU.

Here's a thought... I don't know if it will work. Go out and ride... get up to 6th. gear before hitting 7K RPMs. Then run up till the motor dies. Look at the cluster... does it reset like whan you first turn on the bike? Or does the bike start running again after a few seconds? ( meaning if the ECU turned off then turned back on... it takes a little time for it to sense all the sensors again and start receiving info from each one)

To complete ly die... really sounds like a bad connection.

Ride hard today, Ride harder tomorrow,!
Walk close to Christ today, Walk closer tomorrow

How to fix headlights... Dreamzboy's excellent write-up
https://www.600rr.net/vb/showthread.php?t=138034
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