I have a 1985 Bayliner Capri 1950 In/out... 4 cylinder 120 hp. Engine start up and idles fine, after about five minutes at WOT or so..it start to stall out and finally cuts out. Takes about 15-20 minutes to get it going. Idles fine, revs up fine out of gear, As soon as I put it in gear it and start to throttle up seems fine and then stalls out. Any help would be appreciated.