Could it be calcium or lime build up from sitting in the water for an extended period at some point in the past? If so household CLR works well.
“Said I never had much use for one. Never said I didn't know how to use it.” - Matthew Quigley
Never, never sell guns to buy boats. It’s ok to sell boats to buy guns. I don’t know where that is written, I think in Book of Dan or Wall Street Journal.
Never trust a man who rents pigs : Gus, Lonesome Dove
The Gene Pool is in need of a lot of Chlorine!
Better yet, drain the entire pool!
I was going to say lake snot, algae from setting the lake to long. Then drying on the boat.
What this country needs is a department of common sense! The tree of liberty would be a great place for hang mans ropes!
Team 22 Magnum # 46
Team Old Pharts # 235
Team Wheel gun # 74
Team 22 bolt action # 5
If you need to go new - go for one of the miscellaneous flavors of Tohatsu made factory branded 15hp motors like Mercury, Evinrude, or Tohatsu...
Since you mentioned South Carolina.... Yamaha would be my #1 choice followed by a Tohatsu made Mercury. I would say Yamaha's 3:1 outnumber everything else in the new motor realm around here. The Merc second because it's the fastest of factory Tohatsu's for the given hp output and there are a lot of dealers. Used is probably pre-BRP Evinrude/Johnson 2-strokes followed by Yamaha 2 strokes. You hardly see a new Evinrude around here - and I know the local Evinrude dealer.
The new E-tech's are HEAVY for a 14' boat....
On your Merc... If it consistently will crank cold and run till it's good and hot - it could be an ignition component overheating and shorting out - coil, module, etc... Any way you can get it good and hot then test for spark - that would tell you... But it still sounds like trash in the fuel system somewhere....