7/28/2023 0 Comments Kawasaki kmx 125 carb settingsHanging idle - The engine idles high and then drops and stalls. Idles poorly - Fluctuations in idle RPM, stallingĮngine runs hot - Due to more oxygen than fuel combustion temperatures are hotter reflecting on a temp gauge. Runs on choke - The vehicle may run on choke when it's warm but stalls if the choke is turned off. Runs better at higher altitudes - AFR becomes normalized due to reduced atmospheric pressure allowing fuel into the venturi easier.īackfires - Popping on deceleration for a lean idle circuit or backfires in general. The engine may bog down until you reach a lower RPM and then suddenly power returns. Reduced Power - Sluggish at certain RPM's. Here are some basic symptoms, some duplicate Fuel is metered through the main by the jet needle at different throttle positions.Ĭhoke circuit - Initiated by a valve or butterfly that increases the vacuum and opens the circuit up. Needle jet/jet needle - Mid range circuit Higher effect at lower RPM's with decreasing effect to full throttle Motorcycle carbs have a few circuits that effect different throttle positions. I will try and clarify between the two conditions and attempt to give you guidelines in troubleshooting between the two. In your post you indicate that some of the symptoms you have read are contradictory. Lean and Rich Symptoms in Motorcycle Carburetors
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