I have felt the pain of "Bravo-itis", twice.
My FL boat operates in and sits above (on a lift) salt water.
As it was explained to me:
The water hose that passes through the transom assembly becomes constricted.
The passage for the hose gets corroded and squeezes the hose from the outside.
Mercruiser has a fix for this but, as I discovered the hard way, the new hardware can be installed incorrectly.
A hard plastic insert keeps the new hose from crushing.
If the hose is allowed to twist during insert installation, it can preload the hose in such a way that it later allows enough twisting to restrict water flow.
For me, the smoking gun was a lack of water pressure with the helm hard over.
The "Professionals" did the incorrect repair.
An independent mechanic corrected it.
I hope this helps someone here.
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