OK, Working on the boat for a week or two. J115TLERC. 20 foot huricane deck boat(flat bottom) New fuel pump(pluse on the side of the motor,VRO removed) Ran good after pump installed, 24MPH @ 5400 rpm. Went out today 3300 RPM WOT. stopped on the lake to have a look. Just idled for about 5 minutes and it quit the motor would not turn. starter tried but would not turn the motor. So i took out all the plugs the lower port side was mashed in.(ROD?) Hit by piston i guess. I used a screwdriver to turn the motor and got it unlocked. Hit the starter and it turned over. I put the 3 plugs back in that were ok and started it up. It did some popping with no plug but ran back to the dock about 1/4 mile. NOW the big question.How much more damage did i do running on 3 cylinders? It still ran at the dock till i shut it off.