Bought my first boat 2 years ago. It is a 1982 16' starcraft with 1982 70hp merc.
[FONT=verdana, geneva]First year of owning it I did a top end (bored cylinders, new pistons, seals, etc.) With that came a new stator and rectifier.(battery never charged and stator had corroded wires).[/FONT]
After that, boat ran great but still would not charge. Tested the new rectifier after running and it had gone bad. Put a new one in and ran the boat at the dock with just the starter cables to the battery. It charged at idle and just above idle. Ran the boat the next day (now with trim hooked up to battery). 2 hours later, I checked my battery charge- 12.5V. Tested the rectifier, it failed.

Battery is a 12V Everstart Marine 24MS-6 ( 625 marine cranking amps)
Rectifier positive wire doesn't seem to be shorting to ground. Battery cables to/from starter and trim all seem to have good continuity and not shorting.
Trim works fine, however, there is no position switch at the upper limit of tilt travel and lower limit of trim. I usually just go by sound *when the hydraulic motor starts working hard I stop. Could this cause the rectifier to fail?
Also: having ran the engine with a failed rectifier, should I expect a bad stator too?
[FONT=verdana, geneva]First year of owning it I did a top end (bored cylinders, new pistons, seals, etc.) With that came a new stator and rectifier.(battery never charged and stator had corroded wires).[/FONT]
After that, boat ran great but still would not charge. Tested the new rectifier after running and it had gone bad. Put a new one in and ran the boat at the dock with just the starter cables to the battery. It charged at idle and just above idle. Ran the boat the next day (now with trim hooked up to battery). 2 hours later, I checked my battery charge- 12.5V. Tested the rectifier, it failed.
Battery is a 12V Everstart Marine 24MS-6 ( 625 marine cranking amps)
Rectifier positive wire doesn't seem to be shorting to ground. Battery cables to/from starter and trim all seem to have good continuity and not shorting.
Trim works fine, however, there is no position switch at the upper limit of tilt travel and lower limit of trim. I usually just go by sound *when the hydraulic motor starts working hard I stop. Could this cause the rectifier to fail?
Also: having ran the engine with a failed rectifier, should I expect a bad stator too?

