So the saga continues with my boat. Starts fine at dock, won't start in the water. At first we thought it was altenator, so I took it out and had it tested, altenator is fine...supposedly. The shop mention something about it being a high voltage or low voltage something meaning it won't charge in idle but only in higher RPM. Anyhow, they said it was fine. So I tried to put the boat in yesterday and it took a bit to start at the dock, but fired up and ran great. One buddy rides, engine dies going from full throttle to neutral and won't start. So we flag down a boat and noone has jumper cables so I "borrow" their battery, my boat starts just fine. Would that not suggest an altenator issue? I have two batteries, that's the other thing, my boat will not start on one battery. Both register over 12.0, but won't start the boat on one or the other, must be both to start.
That whole swap battery thing suggests either bad battery (ies) or altenator, but the battery shop said both batteries are good, and the electrical shop said the altenator is fine. If you have read my post before and it is the same, I apologize. I just want to ride and trying to sort out.