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97 Challenge Stalls at 4000 RPM

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Jay Pfeffer

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Bought boats a few weeks ago. New to the ownership of Seadoo. Learning a lot however. Engine stalls at between 4000 to 4500 RPM. Plugs looked ok but put new ones in anyway. Added new oil, dropped in 5 gallons of high test. Starts right up. Smokes a little. Ran the boats around for 30 minutes at low rpm. Throttled up slowly. Gets to that 4000 range shuts down. If I pull back on throttle it’ll stay running. See that there are similar issues. Thx
 
Right after that the main jets are supposed to open. Either you have clogged carbs or a fuel starvation issue.
 
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