Recently purchased 2000 Carver mariner 350. My problem is my boat runs great for literally six hours bringing it back home then all of a sudden when we brought both engines down to 5 miles an hour in a no wake zone the left shut down and will not restart limp at home on one engine, wait until the next day and it starts up like nothings wrong. Ran it for a couple hours. The next day ran like a top slow down to another wake zone left onion shut off limp at home again next day it starts right up. Somebody suggested that it might be a voltage problem anybody else have Any input on what might be my problem?