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Thread: Black smoke- Why?

  1. #1
    WaimakRydah's Avatar
    WaimakRydah is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Black smoke- Why?

    I have noticed when my 200S is in neutral and i give it high revs suddenly a cloud of black smoke will puff out. However ive been riding it up the driveway and looking to see if it happens while the bikes in motion and it doesnt. Why would that be. It doesnt happen when Im just normally riding it. I also have reason to believe my bike is running quite rich. Would that have something to do with it. Its been doing this for quite some time now.
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


  2. #2
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    That's exactly what black smoke means...too much fuel.
    TORKER.
    THOSE WHO SAY IT CANNOT BE DONE, SHOULD NOT GET IN THE WAY OF THOSE BUSY DOING IT...

  3. #3
    WaimakRydah's Avatar
    WaimakRydah is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Thanks for that. I just wanted to be sure it wasnt anything more serious.
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


  4. #4
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    Maybe it's time to go thru it. dissasemble the hole thing and clean everything very good with lots of carb cleaner and put back together. See if you can find the factory setting (if your trike is stock) and start from there. Carbs do wear out so check everything really good. Good Luck
    TORKER.
    THOSE WHO SAY IT CANNOT BE DONE, SHOULD NOT GET IN THE WAY OF THOSE BUSY DOING IT...

  5. #5
    WaimakRydah's Avatar
    WaimakRydah is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    do you know where I could find the factory setting? The carb isnt the original carb but its very similar and I cant notice any differences apart from the number engraved on the side of it. Ill have to wait til i get more fuel before I can trial the different settings. Ive been doing some playing around with it earlier today and making the needle more leaner but it didnt make much difference. Im guna go on a trail ride tomorrow as it is then I will try some more different settings.
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


  6. #6
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    Is the air filter clean?

  7. #7
    drhatc200's Avatar
    drhatc200 is offline At The Back Of The Pack Arm chair racerFirst time rider
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    i had same problem on my 85 200x rebuilt carb it actually idles now lol got kit for $11

  8. #8
    WaimakRydah's Avatar
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    Quote Originally Posted by cr480r View Post
    Is the air filter clean?
    I personally dont think it would be the air filter as its been doing this for quite some time and ive cleaned the filter several times since its been doing it.

    Quote Originally Posted by drhatc200 View Post
    i had same problem on my 85 200x rebuilt carb it actually idles now lol got kit for $11
    Was it a carb rebuild kit? Did you need to adjust it at all or did it idle as soon as u rebuilt it?
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


  9. #9
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    A BIG +1 on the carb rebuild kit...I bought mine and installed it and it ran like new!! You will have to adjust the mixture screw, but if you put it at the factory setting, it puts it close enough most of the time.

    -Nick
    1988 Chevy Silverado 5.9L Cummins : 1986 ATC250R : 2012 Polaris RZR 570 :

    98% of Americans say 'OH $#!T!!' before going into a ditch on an icy road. The other 2% are Alaskans, and they say 'Here, hold my beer and watch this!!'

  10. #10
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    set the mixture screw at 1.25 turns out
    The person who says it cannot be done should not interrupt the person who is doing it.


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  11. #11
    WaimakRydah's Avatar
    WaimakRydah is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Just an update. I installed my XR carb that ive never got to work good until now. It only runs perfect with the choke in the halfway position but it idles beautifully like that and has no high rev miss. I still think I am running it rich but that isnt really causing any problems. In saying this I havent yet rode it with this carb working as it is due to having a broken chain at the moment.
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


  12. #12
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    You either have a clogged main jet or you need a couple sizes bigger main. It'll never run at full power at half choke
    The person who says it cannot be done should not interrupt the person who is doing it.


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    85 ATC200X


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  13. #13
    WaimakRydah's Avatar
    WaimakRydah is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Quote Originally Posted by Erics350x View Post
    You either have a clogged main jet or you need a couple sizes bigger main. It'll never run at full power at half choke
    It sounds more healthier then it did with the original carb and it has no high rev miss so it would be quicker then what Ive been using the last few monthes
    1985 Honda ATC200S
    1994 Kawasaki Eliminator EL250


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