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IF your carburetor is working properly (i.e. proper air/fuel mixture), running with the choke on would result in a rich fuel mixture, causing a range of problems including loss of power, increase in fuel consumption, spark plug fouling, or erratic idle. If you need to keep the choke on to keep the bike running, remove the bowl from the carb, remove the jets, and clean/blow out all parts. Could be dirt in the jet

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Q: What happens if bike runs with choke on for a long time?
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