Johnson 90 outboard - Engine Cuts Out

by Tom
(Southern NJ)

Hi, I have a Johnson 90 outboard engine for my boat. Was running it in low tide last weekend... ran into some shallow water and mud/muck at a low speed but still had to kind of drudge through it for a few minutes. Thermostat eventually spiked so we killed the engine once through the shallow spot after seeing some steam come from the engine for a minute or two. We restarted and continued on down another river way with no issues (thermostat gauge went back to normal) for about 10-15 minutes at a good speed.... then all of a sudden the boat died/engine completely cut off. No warning signs, no more steam from engine, ....nothing, just died and would not restart... needed a tow back. Any thoughts or ideas?

Thank you!

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