I bought a 19' trihull boat with a 2000 Johnson 50. It wasnt running very good from sitting so I first clean the carbs, replaced the plugs, and replaced the old fuel lines. I got it idling so I took it out and it wouldnt get on a plane. WOT it just chugged through the water at about 5 mph. First Mechanic said skirt is warped and the motor is done, second mechanic said it was running great. So now a new head gasket, and a new power pack and it still isnt working. What now? I am stumped
Also the Compression test read 150 and 145
Also the Compression test read 150 and 145