Ok, Guys I need help.<br />My 1984 75hp Merc. will not rev past 2500 rpm, it bogs then just about dies out. This ONLY happens when the boat is under load in the water.<br />When connected to a hose it runs well. It does not over heat and there is a consistant stream of water from the discharge.<br />I have been trying to correct this problem most of the summer with no luck. <br />I have repaired /replaced the following parts one at a time and after each change have tried the boat in the water and have seen no improvment.<br />1)Sea Foam gas additive, then new fuel.<br />2)New carb floats (adj. to 11/16)and needles/seats<br />3)Fuel line and primer bulb<br />4)Fuel pump diaphram<br />5)Completly Drained all gas from tank. <br /> Inspected the inside of the tank and replaced<br /> with new fuel.<br />At this point someone suggested that the high speed Stator could be bad, I have not replaced it yet.<br /><br />Lastly, when I did get it to run for a short time, It ran up to 5000-5200 rpm and then the RPM's fell to about 4400 RPM. It felt like a car would when the trans. shifted gears.( very strange ).I would back off the throttle a little and then give more throttle and it would increase RPM and stay at 5000-5200 RPM until I backed off.<br /> <br /><br />Please help, Im about to give up.
