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Old 11-02-2018, 10:27 PM   #13
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City: Solomons MD.
Vessel Name: Sun Runner
Vessel Model: 1985 Mainship 34 Trawler MK III
Join Date: Mar 2018
Posts: 321
Originally Posted by PMF1984 View Post

The start battery bank just gets weaker every day. Also Iím not so sure about the alternator, so Iíll have to take that off when the journey is over and have it checked.
If the start batteries are being run down with the engine running the alternator is probably bad.
Volt meter hooked up to the start bank ?? Do you see a voltage increase when the engine rpm's are over about 1000 rpm. Enough for the alternator to start a charge.. Should jump up to about 13.6 volts. A hand held DC voltmeter would work too. Might need 2 people to get a reading..
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