Rivertender
Member
Hoping you all have a thought or 2 on my what appears to me to be.......an altetnator issue:
2 inboards
Both start nicely
20 mins run time or so and the port motor dies...dependably time wise. No gasping or choking- just shuts down.
Using emergency start, the port engine will then turn over nicely- even start for a moment- then shuts down as soon as the emergency start is released
Immediately after engine shut down, in the slip, charger shows putting 40 plus amps out to charge up the system....she's working hard using shore power.
My guess, I am thinking the alternator is not putting out-- the shore power is however topping the battery off- port engine starts beautifully next time - runs 25 mins or so and then dies.
Port engine battery not gettng any charge from the alternator and is just using up whatever it has stored to run the motor for 25 min ?
Starboard engine....no such issues.
Do you agree about the alternator? Is there a simple test to see if the alternator is working?
Appreciate your thoughts.
Big block Mercruiser
1997
Sea Ray aft cabin.
Alternator is not old at all, BUT it is FL and all mechanical gear takes a beating.
2 inboards
Both start nicely
20 mins run time or so and the port motor dies...dependably time wise. No gasping or choking- just shuts down.
Using emergency start, the port engine will then turn over nicely- even start for a moment- then shuts down as soon as the emergency start is released
Immediately after engine shut down, in the slip, charger shows putting 40 plus amps out to charge up the system....she's working hard using shore power.
My guess, I am thinking the alternator is not putting out-- the shore power is however topping the battery off- port engine starts beautifully next time - runs 25 mins or so and then dies.
Port engine battery not gettng any charge from the alternator and is just using up whatever it has stored to run the motor for 25 min ?
Starboard engine....no such issues.
Do you agree about the alternator? Is there a simple test to see if the alternator is working?
Appreciate your thoughts.
Big block Mercruiser
1997
Sea Ray aft cabin.
Alternator is not old at all, BUT it is FL and all mechanical gear takes a beating.