by Dave
(Manning, SC)
At idle speed the motor sputters and shakes. Not a violent shake, but it just started yesterday. At this point it isnt a constant shake and shudder rather every 30 seconds or so and lasts for about 15 seconds. At above idle, including full throttle it seems to run perfect. Annual service completed 5 engine hours ago. Plugs look great with proper gap
Fuel lines look clean and in great shape. Fuel filter looks like new. Oil has no gasoline smell. The boat has been sitting in my garage since mid July, with a 3/4 tank, with Sabil Blue added, as well as quick Silver cleaner. Starts fine and seems ok when not in gear.
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