Thanks to everyone for your concern and advice. Yesterday the mechanic replaced the racor and the fuel lines and this fixed the problem. I have my boat back after several months of anguish. Now the problem is to find out why fuel lines the are sitting under 160 gallons of fuel should have negative pressure-maybe a clog in the bottom of the fuel tank or the copper line to the racor? This is not difficult to find and fix and in the meantime the boat runs up smoothly to 2800 all the time.
