Question about 2000 Honda CMX 250 Rebel

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Choke problem hello..ok my problem is,that my bike a 2000 rebel cmx 250 cwill not idle when i shut of my choke,it stalls the engine will however idle if i leave the choke on about one quarter of the way.and this happens when the engine is warm. i also get a "flat spot" when i snap the throttle..if anyone can help i am a senior trying to relive my youth foolish maybe but i like my bikes...

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  • Alan Judson Feb 25, 2009

    penomik...thanks...i tried your solution,but still cuts out when choke is close..on tick over it seems like it is "surging" to..revs go up and down..the bike has only 4,400 on clock,and has been stored for 4 years.. so its really good condition,like new..

  • Alan Judson Mar 23, 2009

    harly mark...thanks for taking the time to reply to my problem..i will do that project ..(if i can find grandsons dremel ) let you know how i get on..thanks...


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The answer is a carburetor cleaning. Todays gas is tough on these motorcycles with small carburetors. The ethol attracts water like a sponge and rusts out your carb.
Take it to a Honda shop and tell them to clean the carb, bike will be back to new once its done. As for your flat spot, there's an enrichment screw right in front of the carburetor bowl. Its tabbed so that your limited on adjusting it. If you take a dremel and are very careful you can grind down the tab so that you can turn it all the way around. I've found that once this is done if you turn it all the way in so its litely seated then then turn it back out about 2 and 1/2 times this should get rid of that flat spot.
Good luck!

Posted on Mar 20, 2009

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Follow the throttle cable to the carburetors and look for the knurled screw on the carburetor linkage. Turn the screw inward to increase the idle speed and turn it outward to decrease the speed. If it does not idle right, replace or clean the air filter and spark plugs. Enjoy your Rebel. I had a 1986 Rebel back between 1987 and 1988. It got around 72 mpg around town and was loads of fun, but it beat me to death the first time I drove it up to the Mountains (about 60 miles away). I traded the next week for a 1988 Suzuki Savage LS-650J. Don't forget to drain the fuel tank and make sure there is no water or crud in the tank.

Posted on Feb 25, 2009

  • Fahr Quad Feb 26, 2009

    Sorry about the delay, I just noticed you posted a follow-up. It sounds like your ignition system is fine. Did you drain the old gas from the tank and run some fresh fuel through? If that doesn't do the trick, check for blockages in the fuel line, the gas petcock and then the carburetors. The old gasoline may have gummed up the needles and jets in the carbs. If the carbs are gummed up, in the best case you are looking at taking out the air filter and spraying carb cleaner into the throttle bores. In the worst case you are looking at a carb rebuild. I strongly recommend adding fuel stabilizer to the gas and letting it run for a while before putting the bike to bed for winter.


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