Re: 1980 75HP EVINRUDE LOSS OF POWER UNDER LOAD
Welcome Ray!<br /><br />Is this engine new to you? If it's new to you, had it been setting long before you got it?<br /><br />Always keep the fuel tank vent wide open. Although you did not have the vent wide open, I do not think this is the cause of the engine not making WOT.<br /><br />Have any idea when the carbs were last overhauled? Reason being, you really can't tell what's in the bowl without taking the carb apart.<br /><br />If the engine is new to you, take the time to do some tests. Compression and spark tests' are a must. Check the throttle plates are opening and closing fully and at the same time....you'll need to take the carb cover off to do this.<br /><br />Check your fuel lines are still pliable and good. Hard fuel lines can suck air at connection points.<br /><br />If you have no idea when the carbs have been last overhauled, I would recommend it. A lean running looper like yours could in time scuff the cylinder walls.<br /><br />Make sure the choke plate is opening all the way when the solenoid is deenergized.<br /><br />A service manual would help you a lot. OEM's are preferred because of the specific info they give on a given engine.<br /><br />Give us a little history on the engine and we'll see what we can do.
