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post #1 of (permalink) Old 06-27-2001, 05:09 PM
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Honda running rich

I have 2 old Honda FTX 250's, an '85 and '86. The '85 runs rough, and smokes all the time (black smoke) I bought the $48 Honda service manual, but can't find a way of adjusting the mixture- all I could find are the pilot screw adjustment and idle speed. Any help! Thanks!

'91 Chevy 4X4 Sport-33x12.5-K&N-Headers/custom-Clarion w/2 12's--2 Honda 4X4's
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post #2 of (permalink) Old 06-27-2001, 05:25 PM
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Re: Honda running rich

tighten the screw on the carb.the one by the bowl

post #3 of (permalink) Old 06-27-2001, 09:47 PM
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Re: Honda running rich

get it jetted right and adjust the air screw of the carb

and what ratio are you mixing your gas and oil

may my zilla live forever

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post #4 of (permalink) Old 06-29-2001, 02:19 AM
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Re: Honda running rich

I'm afraid I'm ignorant as to the jets of a carb, but as to the mixture, I failed to mention that it's a four stroke... should I just take it to the dealer? I disassembled the carb and cleaned it, and that improved overall performance, but did nothing for the rich mixture. Is it poss. for a jet to 'wear out' over time? Thanks for the tips!

'91 Chevy 4X4 Sport-33x12.5-K&N-Headers/custom-Clarion w/2 12's--2 Honda 4X4's
post #5 of (permalink) Old 06-29-2001, 10:58 AM
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Re: Honda running rich

nope a jet wont wear out....if you take the bottom oiff the carb (after draining it first) you will see two little whole screw in thingies these are will be the main jet..should be bigger take it out and look at will see a number on it..go to a dealer and ask for the next 1 or 2 sizes smaller...try them out and see if they work better..keep putting in a smaller one until it stops breaking up...correct me if i left anything out or said something wrong...

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