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Thank you for allowing me to assist you, my name is Joe and I will be happy to assist you with your concern today.
You need to check the wiring to the alternator first, next be sure only marine alternators are being used. In some cases alternators when they charge (and going bad) will slow esp under load and with the engine turning faster then the alternator at that point the belt will slip where it can, smoke and or shred. I would need the exact model/serial numbers of the engine so I can see if the regulator is internal or external and for reference of this system in place.
Thank you!- Joe
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Good morning Randy,
Sorry to hear that and hope he makes a speedy recovery.
What I was referring to/explaining was that if the alternator or when an alternator is not charging/correctly what can take place is a lack of proper voltage, in certain systems this is critical which in this application it is and this can cause the engine to run poorly and or stall.
One thing I would check is that the belt(s) are routed in the correct direction, it's possible that it is ran incorrect and is putting a strain on the system?
Randy, one thing I see is that even when it does charge it's only putting out 13-13.5 at best, ***** ***** in fact actually be putting out around 14v.
I would start myself at the time it squeals I would be disconnecting the wiring from the alternator and see if it then still makes the noise or not, this would eliminate the function/electrical of the alternator as the source of the problem, well, sort of.
can you tell me the part number of the newest alternator you installed?