Question about 1974 Honda CB 200

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Left cylinder won't fire...bike stalls in 3rd gear...

...already changed plugs.I have a 1974 honda cb200.  I can usually get it started in a few kicks (electric start won't do it), and can ride around for a while as long as i don't get above 2nd gear..the bike will stall in 3rd...other times it will stall and i have to wait for a while and mess with the choke to get it to kick...all along, however, the left cylinder can't seem to fire...it HAS been known to fire up (like, the day the guy sold me the bike!) Any suggestions?

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  • earthworm03 Apr 20, 2009

    Well, i changed the plugs and cleaned the points and that did get the left cylinder going..however, i still seem to be stalling out while the bike is running, particularly in third gear or above....The neighbor says it sounds like compression problems...also, there is a small amount of gas/oil mix that is leaking from the cylinder head?  Am i getting close?

  • Anonymous Mar 12, 2014

    when riding on a "flat" road in 3rd / 4th at 4000 rpm bike feels as if it wants to stall as I open thwe throttel. revs do pick up and then seems to be fine but the thing is it never use to do that.

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Check for spark on both cylinders. Chances are it has been years since anyone paid attention to the ignition points. Download a free PDF service manual at the site below. Get the 15th manual from the bottom of the Honda list. Yes, it is a 250cc manual but the points and timing are the same as the 200cc. It is the nearest free manual I could find. Google " service manuals honda " or try your local library. Often guys will donate manuals to the library.
or go to www.repairmanuals.com

FREE > http://www.carlsalter.com/motorcycle-manuals.asp

Also Google " vintage honda parts "

If the gas tank is rusted inside then line it with a liquid liner. Google kreem fuel tank liner “ or go to www.http://www.4secondsflat.com/Fuel_Tank_Sealer.html

Drain the carburetors. There may be a screw on the lower side of each carb float bowl. Remove the screw then replace it after the fuel drains. 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). Install an in-line fuel filter. Turn the gas back on and wait a minute for the carbs to fill with gas. Install new stock NGK spark plugs and try to start the engine. If the bike doesn't start and run properly then shut off the gas and remove the carburetors from the engine.

FOR EACH CARB > 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.
< < READ CLOSELY > >
Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two screws down. Only screw these in until they LIGHTLY seat. Now turn each screw one and one half turns outward. 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.

Please rate this solution. Thanks earthworm03!

Posted on Apr 19, 2009

  • tombones Apr 20, 2009

    Did you clean the carbs? Do you have a timing light? Is the centrifugal spark advancer working? You cleaned the points but did you set them? Are the carbs balanced and syncronised? Did you download the service manual?

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