High voltage w/ new voltage rectifier???

[ssaamm]

I have an '02 Yamaha 4 stroke.  The battery wasn't charging while the boat was cruising like it used to.  My boat guy tested it and said the alternater/charging system should be checked.  He put in what I believe was a voltage rectifier-- sound right?  The first few trips the volts would climb to 13.5 - 14 or so under full throttle. Last night it got up to 16.8 to 17v according to the gauge on the dash. It flashed at 17v.  I assume this is a warning if it flashes.  I turned on the bilge and livewell to draw it down a bit.  The battery reads 12.7 v when the boat is off in the garage.  I should have this looked at I assume.  The depthfinder powered off at one point as well.   Any words of wisdom would be appreciated. Thanks, Sam

[Surface Tension]

Talk with your boat guy and maybe about putting in a regulator between the coil and rectifier.

[delcecchi]

I have an '02 Yamaha 4 stroke.  The battery wasn't charging while the boat was cruising like it used to.  My boat guy tested it and said the alternater/charging system should be checked.  He put in what I believe was a voltage rectifier-- sound right?  The first few trips the volts would climb to 13.5 - 14 or so under full throttle. Last night it got up to 16.8 to 17v according to the gauge on the dash. It flashed at 17v.  I assume this is a warning if it flashes.  I turned on the bilge and livewell to draw it down a bit.  The battery reads 12.7 v when the boat is off in the garage.  I should have this looked at I assume.  The depthfinder powered off at one point as well.   Any words of wisdom would be appreciated. Thanks, Sam

Do four strokes not have voltage regulators?  What size motor? 

[ssaamm]

Thanks, it's a 90hp 

[delcecchi]

I looked around and it sure sounds like you  have a bad regulator.

 

 

[ssaamm]

New regulater installed and works like a charm.   Thanks for the input.