serial number 1B690589
Experienced momentary increases in rpm 100-150 rpm, at all on plane throttle positions, this past weekend. Looking for input on potential causes.
Boat/Motor history:
Purchase from a friend who had it sitting with little to no use over past three years. I placed in shop, and had the VST cleaned, filter replaced, injectors cleaned, and plugs replaced. Shop said they drained fuel tank, however I have reason to believe that they might not have. There is currently an external inline fuel filter in place, which I will be removing. It appears that the fuel lines are original and need to be replaced. Found short section (2') of gray fuel line between filter and primer bulb. This past weekend was the first time I had it on the water since purchase and shop work.
Thanks!