Hi, I have a 1979 Mercury V-150.The trouble starts everytime I start the engine in th

[<HarrysFishingBoat>]

Hi, I have a 1979 Mercury V-150.The trouble starts everytime I start the engine in the mornings and I hammer the throttle to w-o-t,it starts bogging real bad and has no power.After keeping it at w-o-t for an average of 2-3 minutes,it will plane out and run great pretty much the rest of the day,but if I fish a couple of hours and go to crank it,it's hard to start and it begins that bogging again.I've replaced the plugs,wires,fuel filter,fuel lines,cleaned out the tanks,rebuilt all 3 carbs.The ball on the fuel line isn't leaking down,it's firing on all cylinders,and it has good compression.I've owned it for about 6 months,and it has done this everytime I have taken it out.I recently replaced the reed valves and overhauled the powerhead,but still no change.I'm at my whits end and would appreciate any guidance to help solve this nightmare.Thanks

[<SkeeterFin>]

Sounds like a stuck carb float 2 me.
With engine off, squeeze primer bulb and see
If you have gas leaking outa front of a carb.
Look at all check valves starting at primer bulb
and into the 3 carbs.
The 150 is a thirsty girl and don't take kindly
to fuel problems...
Good luck, she's a screaming engine!

[<TMD>]

I would check the bleeder check valves to see if they are funtional. They are located on the manifold and have the black hoses running to them.

TMD