Posts: 1769
Location: Algonquin, ILL | I have a 2001 Merc 90HP 4-stroke, last spring mine did the same thing, what I found is that the squeeze bulb was bad, sounds wierd I know but the Mechanic I usually use told me that when the bulbs go bad they let just enough Air into the gas line so that at lower RPMs the motor is starving for gas but at Higher RPMs the fuel flow is high enough to keep it running smoothly, Don't know if this will fix your problem but it is a cheap fix and worth trying
Good Luck
Edited by JohnMD 5/20/2008 6:12 PM
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