I just rebuilt the carburetor on my 3.0 liter mercruiser because the
engine was running rough. Well I rebuilt it very meticulously because
this was my first time rebuilding it and I thought everything went
well. Now the engine is running smoother and not flooding but the
problem is that after 3/4 throttle the carburetor starts to bog. It
runs great up until 3/4 throttle but after that it starts to bog, not
a serious bog, more like advancing the throttle isn't making any
difference. Well this wouldn't bother me because I never go that fast
anyway but since it is only a 4 cylinder I need that power to get on
plane with people in the boat as the boat is really struggling right
now. So if anyone has any ideas on what would cause this I would
appreciate it. I am assuming it is the carburetor because I didn't
have this problem until I rebuilt it. Thanks.