Running/ carb issues
Im looking for all the help i can get. I have a 87' kawasaki EX500 with 51XXXkms. It has been sitting for 6 years. The carbs have been cleaned several times aw well as syncronizing the carbs as best as i can. The main problem comes down to bogging at low RPM and nothing at high RPM. I have taken the plugs out at different parts of cleaning and running. The right cylinder IS getting enough fuel but the left cylinder is not getting enough at low RPM. Any help or advice at this time would be great, as i would like to be riding it before the middle of july
sounds like you may have to re check your float hieghts, if they are low, you wont' be sucking fuel in throught the jets. when the carbs were cleaned did you clean the emulsion tubes that the main jet screws into? and all the little air venturies that lead from the mouth of the carb to the jets? secondarily, have you confirmed that you don't have a cracked or leaking air intake boot from the carb to the engine? if your sucking air instead of fuel/air from the carb, you wont make any power.
have you ensured that you have good plugs and wires? its hard to tell the difference between bad spark and bad carbs.
Just to add my .02 to the good points that CB made above, you may find that the deposits plugging the small carb passages (air bleeds and pilot circuits especially) need more than a quick spray with carb cleaner. I have found that if you put the stripped carb body (remove all plastic and rubber parts) in a large freezer ziploc bag and saturate the carb well with cleaner spray an overnight soak will work wonders. You'll marvel at the brown gunk that comes out of a 'clean' carb. Blow out with fresh cleaner spray and compressed air in the morning. From what you say, you may have float level or emulsion tube issues (they present similarly) as suggested, but also if your pilot circuit is blocked it will impact the off idle (0-1/4 throttle) running most, followed by flatness through the whole range as it flows fuel through all throttle openings.
If they are CV carbs, a torn slide diaphragm will also screw everything up.
Let us know how you do with it.
thanks guys, I took them out again and pulled them right apart and took the diaphragms to a shop to inspect and i have a torn boot. i called a few places and they r just about 200 bucks and they r 2-3 weeks away. im gunna do wat i can to get them sooner