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    1999 90 HP johnson runs rough at low speed

    New member here so please be patient. I have a 1999 90 HP 60 deg. loop charged Johnson that has started running rough - spits and sputters at slow/no wake speeds at between 1100 & 1500 RPMs. Otherwise it starts and idles fine, gets on plane fine and runs good up to WOT. It does this both in gear...
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