Hey guys,
I'm new here to the site and was looking for some insight to an issue I've been having with my boat. It's a 232 boss package with a merc 454mpi in it. At low rpm the boat sometimes surges and tends to lose power. I've replaced several parts ie plugs wires cap rotor fuel filter iac motor tps sensor. After the tps was done the boat ran flawless for 2 weekends but yesterday it seemed to come back after a short trip through a no wake zone. Low speed 1-2 clicks up on the throttle and when I went to accelerate it was bogging down. I thought the tps resolved the issue and was set now I'm stumped as to what it would be. Brought it to a shop for the iac motor they checked timing fuel pressure and codes said there wasn't any codes. Any help is appreciated.