Re: Stalling 1965 Merc 39 Home › Forum › Ask A Member › Stalling 1965 Merc 39 › Re: Stalling 1965 Merc 39 MumblesReplies: 5764Topics: 298 June 7, 2018 at 3:16 pm #77601 If it takes twenty minutes for the first stall to happen and less time for the next stall, could the original ignition coil or other components be going south?