[Michaelcoss]

Hi i have an older 60 hp Mercuty 3 cyl made in Belgium the serial number is and i am not sure if this the whole number 9553427. It has a split case engine cover with a red stripe on it. I am having trouble determinig the year and it seems that once it warms up it does not want to run at full throttle. It will omly allow a certain amount of power before it wants die and i have to back off.What could this be I have changed the fuel ine from the tank
to motor.

[hkeiner]

If you want to check for fuel starvation, the below linked threads discuss this subject in great detail, which may be of help to you. If you do have a fuel starvation situation, you want to find out quickly and fix it before a lean mixture causes serious engine failure. If you eliminate fuel starvation, then you might consider other causes such as dirty carbs or ignition failure.

http://forums.iboats.com/showthread.php?t=224246

http://forums.iboats.com/showthread....ght=starvation

[Michaelcoss]

Hi thanks for the info and the links, i will start the tedious process of elimination.Any idea on the year model?
Thanks

[AMD Rules]

That motor is a 1989, built in Belgium as you noted.

Warming up and slowing down could be a sign of overheating. Make certain you have a good strong cooling circuit.

Sounds like you might have a fuel pump gone bad, or a dirty carb with plugged main jets.

On your next trial, have an assistant squeeze the fuel bulb while underway to see if the symptom still exists. If it doesn't do it anymore, suspect the fuel pump.

Not a bad idea to clean and adjust the carbs anyways, if they have not been done in a while.

hkeiner pointed to some other ideas, worth checking.

Good luck.


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