I have a 1984 honda big red atc 200es I just got from a family member its been sittin for about 2 years so far ive totaly cleaned the carb made sure everything looked brand new inside and out it still idles high ive messed with the fuel air screw and idle at one point I got it to idle pretty good hit the throttle and it would idle but really rough and its back to missing back firing and bogging down when you hit the throttle any ideas?

SOURCE: XR 70. Idles fine. Won't throttle up just dies. Changed Plug, gas, cleaned carb...what am I missing

ALWAYS have a fire extinguisher at hand when working on carburetors.
Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. Turn the gas back on and wait a minute for the carb to fill with gas. Install a new stock NGK spark plug and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well.
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Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Before putting the slides back in the throat of the carbs, move the clip on the jet needle one notch lower. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

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SOURCE: kx 85 04,bike had a slight bog when throttle was

Start with setting the air and throttle screws. Turn each one inward until it GENTLY seats. Back each one out one and one half turns. Clean the air filter and starter plunger. The plunger may need to be rebuilt or replaced. Check the pilot and main jet sizes. There will be a number stamped on the side of the jets. The pilot jet should be #45, the main jet should be #140.

SOURCE: Where is the idle screw, air/fuel adjustment screw on a VT750Cd

It just need to be perfect keep trying different air flows

mark woodring

• 498 Answers
• Posted on Jan 05, 2010

SOURCE: 2001 Honda Shadow ACE 750 idles, but won't rev up

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