Engine Cutting Out?

[Tiara 3100]

Gents,

I have a 91 31 Open with twin 454's, I have noticed the voltage to be kind of low when trolling on the port side engine. Recently the port side engine has started to cut out, as if some just turned the key off, it will start right back up no problem. I had the electronic sensor/module in the distributor changed and it still does it. We have tried a different coil and it stills does it. The mech thinks it is likely the alternator causing the low voltage and that is causing the engine to cut out.

Today I started the port engine and it was idling fine, (after being plugged into shore power and the battery was being charged) I disconnected the positive lead to the battery and it stalls right away. I did this to the starboard engine and it continued to idle fine. Does anyone have a opinion or advise here??? Does it sound like an alternator issue??

Thanks

[Crazyfish!]

Gents,

I have a 91 31 Open with twin 454's, I have noticed the voltage to be kind of low when trolling on the port side engine. Recently the port side engine has started to cut out, as if some just turned the key off, it will start right back up no problem. I had the electronic sensor/module in the distributor changed and it still does it. We have tried a different coil and it stills does it. The mech thinks it is likely the alternator causing the low voltage and that is causing the engine to cut out.

Today I started the port engine and it was idling fine, (after being plugged into shore power and the battery was being charged) I disconnected the positive lead to the battery and it stalls right away. I did this to the starboard engine and it continued to idle fine. Does anyone have a opinion or advise here??? Does it sound like an alternator issue??

Thanks

Dave..replace the battery for starters. If the alternator is charging a bad battery it will show low voltage. I assume you have 4 batteries on that battleship so switch a couple around and see if the problem goes away. If it does...its most likely that battery on the way out. If the alternator is working it is most likely not your problem, it just cant keep up to a bad battery or a draw somewhere in your system.

CF

[welder]

I'm with Crazy.............Get new batteries . Well at least have that Batt checked or get a Volt Meter and check it your self .

A good battery has 2.2 volts per cell X 6 = 13.2 volts with nothing hooked to the battery.

[jigger]

Check your battery with a voltage draw meter and see if it is o.k. But there is a problem with the alternator on that engine. When you disconnect the battery lead with it running. The alternator should be able to produce enough power to sustain life to the engine.