1988 evenrude 28hp

[ripper]

I am having issues with the engine sputtering when i apply throtle, at times it runs fine and the next minute it is cutting out for a split second. At idle it runs smooth for a minute,cuts out for a second and idles smooth again. At times out on the lake at full throttle it boggs down and I pull back on throttle and and push full again and it takes off like a rabbit. Any idea if it is electrical or fuel? Any advice would be appreciated

[boats.net]

Could be either. The power pack maybe going out or could also have trash in the fuel. When it is cutting out check spart on all cylinders.

[ripper]

I took the boat out again today and found that if I take the engine cover off the engine runs good at full throttle but not at slow speed. If I put the cover back on it runs better at low speed but will not run worth a darn at full speed. Could this be a fuel/air mixture issue? Do I need to rebuild thecarb or is there an adjustment I can make with valves or the float?

[boats.net]

You should rebuild the carbs and adjust the air/fuel mixture. Also varify that the cowling duct is not clogged.

[antbigtenman]

check the gas bulb could have crack . try squezing when engine acts up see if it helps