04 CBR Rev Problem - 600RR.net
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post #1 of 9 (permalink) Old 04-22-2010, 08:26 PM Thread Starter
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04 CBR Rev Problem

2004 Honda CBR 600RR
13K Miles

This started towards the end of last fall, My bike wont rev to 9k rpm's, when I rip the throttle, i only twist it halfway and my bike lags out, im limited to like 85mph, it just starts to lag. I put in brand new spark plugs last August. Any Idea? I think its the fuel pump but pops says its the filter. Fuel lines are fine.
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post #2 of 9 (permalink) Old 04-22-2010, 08:30 PM
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Fuel pump and filter are both togather. Is there an fi light on in you cluster?

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post #3 of 9 (permalink) Old 04-22-2010, 08:44 PM Thread Starter
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Nope, no blinking at all.
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post #4 of 9 (permalink) Old 04-22-2010, 08:52 PM
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is there any crazy smoke coming from the exhaust. (white or black)

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Listen, a--hole, if I wanna do wheelies in the driveway to impress my son's classmates I'm gonna damn well do it and you safety fascists better stay outta my way cuz the driveway's pretty short and you have to hit the brakes pretty hard to avoid those damn kids
Nothing more, nothing less
The guy with the bigger gun wins

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post #5 of 9 (permalink) Old 04-22-2010, 09:00 PM Thread Starter
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None, Everything is fine as far as I can see. I read somewhere that someone with the same problem discovered that one of their spark plugs popped out, but then again more people with this problem have replaced their fuel pumps and their bikes were back to normal again, so Im not sure, Im making a list of the possibilities, for tomorow because Im going to take it apart.
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post #6 of 9 (permalink) Old 04-22-2010, 09:10 PM
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that is waht i am thanking fuel pump. Check air filter, coil and vacuum hoses.

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Originally Posted by bluremi View Post
Listen, a--hole, if I wanna do wheelies in the driveway to impress my son's classmates I'm gonna damn well do it and you safety fascists better stay outta my way cuz the driveway's pretty short and you have to hit the brakes pretty hard to avoid those damn kids
Nothing more, nothing less
The guy with the bigger gun wins

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post #7 of 9 (permalink) Old 04-22-2010, 10:38 PM Thread Starter
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Will do, Thanks.
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post #8 of 9 (permalink) Old 04-23-2010, 07:13 PM Thread Starter
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Alright so I went to check the fuel pump area, and discovered my vacuum hose going from the tank had been pinched in two spots, a ton of rust stained water instantly poured out. I just took it for a quick spin, it seems to be running better already, but do you think it could have had some effect on my fuel pump because Im pretty sure I still feel some throttle lag. That hose must have been pinched for at least 5 Months of Solid riding.
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post #9 of 9 (permalink) Old 04-23-2010, 07:15 PM
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I would get that replaced. Glad you figured out the problem.
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