First off Sorry for long post ?..I have a 1985 hudra sport with a mariner 90 hp motor , history on boat I have had it 3 summers now ? first 2 summers boat ran good with no problems ( except to start the boat when cold have to move throttle handle about 3 inches forward (not in gear) to start it once started I could just put back in original position ) ? but this summer I took boat out for the first time and it would not go over 1500 rms and would stall out and die if tried to go over that , so took home did compression test everything good 115-120 all cylinders ? BOAT RUNS FINE AT HOME ON MUFFS NO PROBLEMS ,so replaced all spark plugs and fuel filter and took boat back out .. but still did same thing .. so took back home and drained all old gas out ( I did put stabilizer in last year ) just to rule out bad gas and figured maybe the carbs were little dirty with carbon , so added new gas/oil mixture and added some berrymans b12 ? took boat back out now as soon as I put in gear boat dies out , took home after reading some forums decided to try to rule out what area may be the cause .. so I ran new lower fuel line from fuel pump with new primer bulb into new gas can with new gas/oil mix (no berrymans this time) to see if maybe I had a problem from fuel pump to tank some where by bypassing lower fuel line to engine disconnect to tank? took boat out still same problem dies as soon as put in gear ? BUT AT HOME RUNS FINE ON MUFFS ?I did notice this time at home the boat will die when left in neutral after about 15 seconds, if I don?t move throttle up a little to keep it from dieing , other wise runs fine at home ?.so im assuming now I have a problem some where between fuel pump and carbs .. ( I also did take fuel pump screen off and cleaned out it wasn?t dirt or ruptured ) , ? I really don?t think I need the carbs overhauled , just have a feeling its something simple im missing ?. Im not a boat mechanic by far but can do you basic stuff ?I feel I have one problem that just seems to have gotten worse over the time trying to figure out whats causeing this problem , so im kind of stumped right now and looking for any advise I can get
