I have a 2010 Mercury out board. It's a 115 hp 4 stroke. Has not run right since I bought the boat. Missing out and such. Used or leaked a gallon of oil every time I used it. Found cyl 2 had no compression and pulled the head. Cyl 2 exhaust valves had a burnt hole I could stick my pinky in. After the machine shop was through with it I reinstalled it and it ran like a top at all speeds for a good 4 or 5 hours of boating. Was heading to a new fishing hole about 12 miles across the lake and it did great for about 10 and then started missing every 30 seconds to 2 minutes. I killed that motor and checked my oil and it wasn't even registering on the stick. After I let the engine cool off I went straight home at about half throttle and never had another issue. I'm at my wit's end guys. Any ideas on where to go from here
