CBR 600F4 1999 - 2000 Honda CBR 600F4 Forum

TUNE UP GONE WRONG

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Old Sep 30, 2007 | 12:24 PM
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hey whats goin on guys....so i did a tune up on my bike. i replaced the air filter(k&n)and spark plugs. i also had to replace the fuel line since i ripped a hole in it while taking off the gas tank.

well, the bike idles fine, but my problem is when i drive it around the block. through first gear its fine, and most of second. but when i hit third gear it starts to bog down, like its fightin for gas(?). the bike will continue to run rough, and when i hit the freeway i couldnt get it past like 65mph. the bike jumps alot and feels like im twisting the throttle over and over again.

any suggestions? i went back and torqued in the plugs with a torque wrench to propper torque, checked the oil level. is there a certain type of fuel line that i need? cause i used fuel injection line, as regular fuel line kinks. thanks for the help
 
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Old Sep 30, 2007 | 01:01 PM
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Default RE: TUNE UP GONE WRONG

I wonder if it was running lean to begin with and now it's worsened with the addition of a high-flow filter? Don't think it would be your plugs, I mean, the engine sounds fine, right? Firing good?

If you've got a slip-on and now the air filter, you may just need to have the carbs synched and jetted for optimium performance increase,
 
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Old Sep 30, 2007 | 01:27 PM
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All the hoses in where they need to be? Especially the ones to the air box.
 
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Old Sep 30, 2007 | 02:09 PM
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Default RE: TUNE UP GONE WRONG

pinched fuel line?
 
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Old Sep 30, 2007 | 02:35 PM
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ORIGINAL: Nauree

pinched fuel line?
That's what my money is on too. If you replaced the molded line with a piece of tube from autozone it's possible it's being pinched. The molded line is a wierd shape so that fuel can flow freely from the petcock to the filter.
 
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Old Sep 30, 2007 | 03:21 PM
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alright...i was afraid of that, ill order the part...hey i also didnt gap the spark plugs, this is really my first tune up so i dont know if thats a big deal or not.

 
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Old Sep 30, 2007 | 03:23 PM
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btw all the air filter hoses are good.
 
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Old Sep 30, 2007 | 05:43 PM
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ORIGINAL: terror

alright...i was afraid of that, ill order the part...hey i also didnt gap the spark plugs, this is really my first tune up so i dont know if thats a big deal or not.

Are they iridum plugs or copper?
 
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Old Oct 1, 2007 | 12:14 AM
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they are ngk standard...not sure what they are.
 
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Old Oct 1, 2007 | 10:20 AM
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Default RE: TUNE UP GONE WRONG

their copper. you didn't gap them? wtf. thats probably your problem right there. if you buy the iridum they are already pre gaped.
 
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