Offshoreonly.com - 502 MPI - Redline on the Volts Gauge... Help.?

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502 MPI - Redline on the Volts Gauge... Help.?

So the situation is something like this...
Engine is running fine.... then all of a sudden
Volts gauge just Burries it self to the far right side... (+)
I shut down the motor. start it up again and like magic the
problem is fixed.... the motor has begun to cough/sputter
once or twice after I kill the ignition.. but upon start up
everything is okay again..
Am i right in thinking voltage regulator is shot??
= too much fuel?
and if this is the case does this simply mean a new alternator?
Any thoughts on this is much appreciated.. Just thought id check
in with y'all before i start ripping stuff apart.... thanks again! MW

Re: 502 MPI - Redline on the Volts Gauge... Help.?

Quote:

Originally Posted by velo

IMO you are correct about the voltage reg. I had one do that about 4 years ago, replaced the alt (it was very old too) and everything AOK.

Re: 502 MPI - Redline on the Volts Gauge... Help.?

Symptoms like that could also include bad diode as well as bad regulator. Just go ahead and swap out the alternator.