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CB 600 troubles
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CB 600 troubles - March 29, 2010, 06:13 AM

So i just bought an 04 cb 600, its the carbureted street fighter bike that honda had out for a little while. The bike had been sitting for about a year and when i ride it i notice a lag at low rpm's and after my last ride i smelled like gas so im guessing its not igniting the fuel properly. So where should i begin looking for the problem? Im guessing the spark plugs?

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whoa preppy......
 
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March 29, 2010, 06:25 AM

shitty gas. Drain it. Refill it with fresh gas and a bottle of Techron. If it feels like it's getting better, repeat. If not, pull the rack and clean the jets and bowl covers.


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March 29, 2010, 05:54 PM

i don't think its the gas i noticed after a ride i smelled like fuel, im going to guess that its not igniting all the fuel. where would the problem come from?
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March 29, 2010, 05:56 PM

Are you burning year + old gas in a carbureted bike?


"Start where you are. Use what you have. Do what you can." - Arthur Ashe
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March 29, 2010, 06:00 PM

put new gas, clean the jets, new plugs and it should be good.


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March 29, 2010, 06:43 PM

i got the service manuel and may try doing it myself but about how much would this cost me at a shop and and ideas where to go?

I have already drained the tank and added BG 44

Im going to see where that takes me before i go for the jets
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March 29, 2010, 07:08 PM

Taking the carbs and cleaning them will be a good learning experience for you.


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March 29, 2010, 08:25 PM

I bet the carbs are gunked up and the bowls are stuck open which would flood the engine. Does gas drip or drain out of the overflow hoses from the carbs?
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March 29, 2010, 10:43 PM

negative, the gas is coming straight out of the exhaust, im thinking the cylinders arnt firing correctly as there is unburned fuel meaning it is not using the right fuel to air mixture
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whoa preppy......
 
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March 30, 2010, 08:21 PM

You asked for help and frankly, you've gotten a lot of solid answers as to what your problem might be. I don't care what you *think* it might be. If you truly knew, you wouldn't be asking. There's a lot of combined years of motorcycle wrenching experience in this thread, and I can safely say that you are not the only one to experience this type of motorcycle issue. I can tell you, that after a year, gas will turn to shit, gum up carbs, and cause all sorts of problems just like the ones you've described.

Jets in carburetors allow the passage of two things.


Some meter fuel.
Some meter air.

Guess what happens when an air jet gets clogged?

Floats will gum up and get stuck in the position that allows the bowl to continue filling, causing gas to flood the cylinder, foul the plug, and make the bike run like garbage.


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Last edited by Scot; March 30, 2010 at 08:29 PM..
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April 4, 2010, 09:54 PM

take a heat gun thermometer and check each header temp....A low temp would usually mean a mis-fire or 'running rich' condition. At least you will know what carb is messed up.
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