CBR 600F4 1999 - 2000 Honda CBR 600F4 Forum

my 99 f4 is running very sluggish

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Old 04-29-2008, 12:21 PM
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Default my 99 f4 is running very sluggish

the bike starts fine and runs great in first and second. Once i try to give WOT in third and up the bike feels like it's running to rick or getting no gas. I just changed the air filter and spark plugs with no luck. Any help would be appreciated.
 
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Old 04-29-2008, 03:16 PM
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Default RE: my 99 f4 is running very sluggish

ORIGINAL: stevierez
the bike starts fine and runs great in first and second. Once i try to give WOT in third and up the bike feels like it's running to rick or getting no gas.
check the jets in the carbs. my old yamaha had the same issue and it turned out to be buildup in a couple of the jets.
 
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Old 04-29-2008, 03:44 PM
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Default RE: my 99 f4 is running very sluggish

yea, clean the carbs completly. check the fuel pump and fuel filter make sure they are flowing properly.There is a thread in the how to on cleaning carbs i added a little on the end of the first page on how to clean the idle jet, but do the same thing with both the jets in there.
 
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Old 04-30-2008, 04:14 PM
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Default RE: my 99 f4 is running very sluggish

thanks for the advise. I ended up bringing the bike to ahonda dealer. I will post the what the problem was.
 
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Old 04-30-2008, 05:22 PM
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Default RE: my 99 f4 is running very sluggish

mine is doing the same thing first I thought it was the fuel filter I changed it no luck then I thought it might have been the fuel pump but I checked the plugs and they were black like the bike Is running rich and at night when I let off the throttle it blows a flame out the pipe not a steady one just one when it back fires...Mine does it in all gears when you lay into it, it bogs down for a second and then goes fine Ill try the air filter next.
 
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Old 05-04-2008, 04:17 PM
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Default RE: my 99 f4 is running very sluggish

dirt dobber sounds like youre running rich.

stevie did you get the problem figured out?
 
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Old 05-06-2008, 02:29 PM
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Default RE: my 99 f4 is running very sluggish


no the bike is in the shop to thursday. Honda said they found a broken piece of plastic in the gas line from one of the nipples also they said i need my carbs cleaned.I'll keep you updated
 
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Old 05-13-2008, 04:10 PM
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Default RE: my 99 f4 is running very sluggish

carbs needed to be clean. bike running like new.
 
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