1988 70 hp merc overcharging problem

[Rusty]

Can anyone help I 'm about at wits end with my boat, I have an overcharge condition about 16 to 16.5 volts...replaced 2 rectifiers, no change anybody know if this is a common problem & what is the fix....checked all connections, batteries, etc....2 volt gauges on the boat besides a fluke meter on the battery still overcharging the only thing left is the stator...thanx Rusty Balls

[jimski2]

Try another battery, your voltage regulator may be sensing a weak battery.

[UpGrady]

Actually sounds like a voltage regulator problem to me.

[Miss em]

Had a similar situation with my OMC one time - changed the rectiifer - ended up being the batteries.