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Thread: 200s Carb Adjustment Help??

  1. #1
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    200s Carb Adjustment Help??

    My 200s has always started on first pull after the rebuild. Lately it has been taking several with choke. Also, idle has not been really smooth. I have been messing with the fuel screw because it was running rich and stalling out when hitting the throttle. Than I think I made it to lean because it started clunking loud at idle. Now its not clunking, but not starting well, and idling rough. Having trouble finding a happy medium. By the symptom's, am I running to rich or to lean?
    Last edited by mike84bigred; 07-16-2014 at 09:07 PM.
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

  2. #2
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    I just pulled the plug and it was wet and smelled like gas. I'm guessing its running way to rich then? Then why do I have to choke it or give it gas to start it?
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

  3. #3
    Russell 350X's Avatar
    Russell 350X is offline Testicles between my toes at the devils backbone Teaching quads a lesson
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    Check your spark, if its weak and orange colored, you got weak spark. Toss a new plug in it and try it. If that's not it then clean the carb. Needle could be partially sticking.
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  4. #4
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    The spark did look a little weak and orange colored. I swapped it out and it fired right up. Still seems to be running a little choppy at idle though.
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

  5. #5
    Join Date
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    Slidell, LA
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    Clean the carb, run an inline fuel filter then get a manual and set your fuel mixture screw back to stock spec's.
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  6. #6
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    North Tonawanda, NY
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    Just realized I had 2 kinks in my fuel line because of the way I mounted the fuel filter. Could that cause it to run lean, or would that cause it to not run at all?
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

  7. #7
    Join Date
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    Quote Originally Posted by mike84bigred View Post
    Just realized I had 2 kinks in my fuel line because of the way I mounted the fuel filter. Could that cause it to run lean, or would that cause it to not run at all?

    Both, get rid of all the kinks an let her flow!

  8. #8
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    Seems to be better now, but not perfect. It will start right up, and idle fine, but then it will pop and usually stall out. The gas is a few moths old in it, so maybe the gas is getting bad? I should take it out soon and really run it rather than just putting around the yard.
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

  9. #9
    JustEnough's Avatar
    JustEnough is offline At The Back Of The Pack Arm chair racerAt the back of the pack
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    A valve adjustment might be one thing to consider.

    I have had great luck cleaning carbs with HOT water and laundry detergent. I use a lot of HOT water to rinse and blow them out with compressed air thoroughly.

    I make sure the specs match the numbers listed on this document:

    http://farm6.static.flickr.com/5019/...bfc676cd_b.jpg

  10. #10
    mike84bigred's Avatar
    mike84bigred is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Oct 2006
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    North Tonawanda, NY
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    Put a new plug in. It fires right up and runs great for like 5 seconds, then starts popping and tries to stall. If you hit the gas past quarter throttle it stalls right out as well. I am going the redo the clearances to see if there ok. Still think I have a carb issue going on as well.
    84'200s (Dad bought new in 84, long gone)
    84'YTM200 (sold 02)
    85'KLT160 (sold 05)
    84' Big Red (Cobra exhaust,good shape) sold in 08
    84' Big Red (Parts Bike, runs good though)sold in 08
    85' 250SX (New plastic, Clark Plastic Gas Tank, Web Cam Camshaft, Cobra Exhaust, Moose Jet Kit, etc..) sold in 2010 and highly regret!!!
    04 Polaris Sportsman (Swapped 400 motor with a 500, Polaris wheels w/Kendra Bearclaws, Moose Fender Flares, Brushguard, Warn Winch)
    84 200s (Needs work!)

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