Hey everyone i have a 1971 1150 engine that i have not had to much trouble out of and i have never been stranded until this weekend. Last weekend my boat run fine all day then this Sunday i put it in the water it cranked up a little funny. I rod away from the dock let it run for a min and then went back to the dock to pick up my buddies. When i drove it back in it cut off at the dock after they were on it cranked back and and we proceeded out of the no wake zone. I went to give it more gas and it bogged down and cut off we went threw this for 10 min or so and then it got to the point where it would not even crank. I messed with it and 1 hour later i got it to crank for a sec and we went 20 feet and it did the same thing. We then had to get towed in to the dock and put it on the trailer. Oh yea i did check spark one 2 plugs and we had spark. I have not changed the plugs for 1.5 years or so but the wires are new. I was told by some friends that it could be my COIL and i will still have spark at the wires but not enough spark what do u guys think.