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94 250 trail boss will idle fie but when giving it some throttle it want's to choke out? Cleaned all carb and adjusted it to good idle ? Cables?, Gasket somewhere? could this be a cam problem as well?

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  • neils27 Aug 26, 2010

    Thank you i will adjust needle first i was thinkin this but not sure
    i have no history on device.

  • neils27 Aug 26, 2010

    1. how to adjust ignition advance is it the cable beside the housing?
    2. How to adjust camshaft?

  • neils27 Aug 26, 2010

    tryed needle didn't fix it.

    1. how to adjust ignition advance is it the cable beside the housing?

    2. How to adjust camshaft?



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3 possible causes, you must check them all in this order of probability:
1 - the mixture is too lean - the carburetor is badly adjusted: either the level in the bowl is too low or the needle is maladjusted in the main jet.
2 - the ignition advance is too late.
3 - the timing on the valves is off - camshaft is out of position; also check the gap on the valves.

Posted on Aug 26, 2010

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  • Azrael SRL Aug 26, 2010

    In that case the former owner maybe didn't took care of it, it might be a worn out carburetor. If you could find a refurbished part to replace it, it would be perfect.

  • neils27 Aug 26, 2010

    Carb looked good on inside bowl level fine?

  • Azrael SRL Aug 26, 2010

    1 - yes.

    2 - take the covers off, manually align the crankshaft to the sign on the carter, look at the sign on the cog wheel on the camshaft and see if the sign aligns with the mark on the head. If it doesn't then remove the chain, align it to match and put back the chain. At least basic experience in engines is necessary, if you don't have it then ask a friend who has done that before to help you. And after that check the gaps



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