Motor will not "plane out"

[Tenn Tom Crappie]

I have a 5.5Hp Evinrude fisherman. It starts and idles fine. It will even rev up great in neutral or reverse. It won't however get up to max speed in forward. Suggestions?

[CatFan]

Make sure the gas is new. Even a few months can make a difference.

Try a new plug.

Have the carburetor cleaned if that doesn't do it.

[Barnacle Bill]

How big of boat do you have it on?

[Tenn Tom Crappie]

14'; new gas, clean carb, new plugs

[CRAPPIEHUNTER68]

I have a 60 hp Mercury on a 16 foot Alumacraft. For years it would run 36 MPH trimmed out and just me in boat. For the last 6 months does not trim and plane correctly. Front end pushes water so max speed only 31 mph. If I keep trimming motor blows out before front comes up to proper plane. If I add a person to the back of the boat runs fine again. Can I make some sort of adjustment to make the boat plane properly again?

[go dart]

first thing to check if motor appears good/won't plane is make sure your not leaking. if you have an open floor then you know instantly.

[stinkies daddy]

first thing to check if motor appears good/won't plane is make sure your not leaking. if you have an open floor then you know instantly.

since your gonna check things, make sure you dont have a vacume leak and are sucking air thru the fuel system

[Barnacle Bill]

14'; new gas, clean carb, new plugs

I suspect that you just don't have enough motor for that boat. You could try shifting a little of the weight forward.

[Tenn Tom Crappie]

I'm taking it to a professional hopefully tomorrow. Thanks for the input

[sticko]

check gas tank vent.

High speed jet plugged up

not propped out right.