The problem is usually a dirty or clogged carb jet, a vacuum leak, or incorrect jetting for altitude. Only running with choke on actually indicates a lean condition, the choke blocks off the air making the mix richer, open will be leaner I did need to include after my early comments, that the reason it stalls when the throttle is opened up quickly is because of the lean condition and the fact that going from idle up to about 1/4 throttle includes the transition from the idle mix circuit to. A motorcycle will only run with a choke if dirt is trapped in the carburetor parts, including the petcock, pilot jets, fuel filters, and fuel lines Why your motorcycle only runs on choke with spring right around the corner, you may be itching to start up your motorcycle and get some riding in However, you start it up on choke and everything is fine until you turn the choke off, and the engine dies
This is a classic symptom of a partially or fully clogged pilot jet. Engine only runs on choke troubleshooting an engine that only runs on choke is a common complaint, especially among dirt bike and atv owners Is your motorcycle only runs with choke on Uncover 3 potential reasons why a motorcycle dies when choke is off with easy fixes.
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