1999 Mercury 9.9 ML 2 stroke stalls

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Jun 21, 2016
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Working on a the above engine. Starts like a champ and runs ok but appears to run the carburetor bowl dry and stall. Pump the ball back to pressure and starts right up again. Brand new tank,band new gas. I removed the carburetor, inspected and cleaned. No visible issues but I do not work on a lot of outboards. My background is with generators, electrical and power equipment. I am guessing I have an air leak or a pump issue. Any thoughts are appreciated. Thank You!
 
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