Thanks for the help on the impeller question I inquired about last week. Got it installed and it is working great. New problem is that it is starting hard, backfiring occasionally, and dying several times while trying to start cold. Took it out the other day and got going with it and about 1/3 throttle it dies out. I kept trying to get it to open up all the way without dying and it did once and took off like a rocket so I know it has potential and will run great when I get the bugs out of it. I checked compression and have 110 upper, 110 center, and 90psi on lower cylinder so compression is decent I believe. Any pointers? Is a blown head gasket possible? I have read about rebuilding the fuel pump. There is a white filter after the pump that I might try to change. Don't know anything about boat carbs but might try to clean them. Any thoughts from someone that would have better answers than my guesses? Thanks a million in advance.