Did not check coil packs yet, did not take out plugs since installed, did not do temp sensors, I did the tune up as was quoted $1000, beeps when accelerating usually. A friend of mine that knows marine engines will take a look this weekend. Engine serial is 0E425956. Thanks for all your help!
Smoking, appears to be running on less than 6 cylinders, won't go past 4500 rpm, top speed around 40 probably. Runs fine on idle when cold, dies on idle when warm. Had a full tune up, all filters, stator oil, plugs.. Beeps all different ways, but no lights on, checked all fuses.