Compression test

[Joker2]

Well went out today. Got to boat swap out the fuel / water seperator filter next off to gas dock ( 16 Gal high test ), had a problem threading on my Perko plastic gas cap, I deformed the threads and just forced it on, ( I know I need a metal one )off to go tubing, everything normal, tubing for about 1 hour, through all rpm ranges a little opened up, all fine, then it happened, she started cutting out on me no power, got it started with the fast idle lever a few times, drove a couple of hunded feet it happened again, started it dropped down the fast idle she wouldn't stay running, dumped my water seperator real quick and put it back, looked OK, also right before this happened as I was backing away from the beach slowly, into a slight chop, a little wave came over the transom, ( not sure if this has anything to do with it ) problem started shortly after that happened. Could water have gotten in somehow ?Not sure what to do, Tomorrow I am checking comp. Any chance this could be a fuel pump problem?

[phatdaddy]

so all was good until u ran x number of gallons out of the tank, try seperate fuel system and see if problems follow tank or engine

[Joker2]

Did comp. test this morning with a brand new screw in type tester. Had to do it with the engine cold, I can't start it. I got 120 lbs. on all three starboard side cyl. Had 100 lbs. on all three port side cyl. Also this is the 3rd time I found black buildup on the lower starboard side plug. I just changed the plugs last week, only ran motor about 2 hours since. I will try seperate fuel, I think those numbers were like that since I got boat, I feel yesterday was fuel related, just wanted to check comp. Is there a problem with these comp. numbers ?