Black Max 150 85-88 model Boggs down. Cleaned fuel tank, new mixed gas, new fuel filter, completely rebuilt all 3 carbs, new bulb, new plugs.<br /><br />Took to lake. Starts good. Idles pretty good. Give gas and engine begins to bog. Wants to run be does not. Gets about ready to plane out but can't. <br /><br />Frustrated. Please advise. <br /><br />Update: Bought new 9 gal portable tank, hoses, bulb and fittings. Completely bypass builtin fuel tank, hoses and filter. Installed new plugs and wires. Took to lake. Starts good. Idles pretty good. Give gas and engine begins to bog. Wants to run will not. Gets about ready to plane out but still can't. <br /><br />Trailered boat. Notice a lot of water draining from bottom of lower unit from around prop. Is this normal? Can a lower unit problem of some kind cause engine to bog? Engines bogs in forward, neutral and reverse as throttle increases. Starting to suspect fuel pump or lower unit issue? <br /><br />Please advise