1986 Merc Classic 50

[benvan77]

Has been running great. Recently the last two outings, the thing cranks, on first or 2nd try easily. Runs great at low throttle. As soon as I get above half throttle, it wants to bog and or die. Then if I squeeze the primer bulb It will take fine, then start to rev, rev, rev, and slowly putter back to below half throttle. Thought air may be getting in the lines, but I checked them and see no way air is getting in?

 

[Alumarine]

It sounds like your fuel pump needs rebuilding.

 

[roscoe]

Air can get in any hose fitting on or around the carb, the fuel pump, or the fuel bulb.
Make sure all are tight.

Then rebuild the fuel pump. $20 for the kit.

 

[benvan77]

k, now I have one more question. On searching for fuel pumps for this outboard I am confused. The pumps I am finding have too many outlets for fuel flow. This outboard has a fuel pump on each carburator. They each have a blue dial/feed connector that are fed via a T in the fuel line system. I can not find these fuel pumps anywhere? can anyone help?

 

[GA_Boater]

Are you looking for separate fuel pump kits? Since the pump is integrated as part of the carb, you you might want to look at carb kits.

What is the serial number of your Classic 50?

 

[benvan77]

will get serial number up today.

When priming the fuel bulb, until extremely tight, i can then continue to squeeze VERY HARD, and gas will squirt out of the front of the carb in a stream. Is this normal or should I be looking at doing something else to this thing as well? the bulb does get and stay hard.

 

[racerone]

The bulb is nothing but a manual fuel pump.---The average human being can generate more pressure than the fuel pump on the motor !-------That is why you get a leak past the float valve.----------Get 2 carburetor repair kits and make sure you replace the float valves as well.-------------Kits usually include the needed fuel pump parts and not much $$$