Evinrude 140 19?? - Engine dies when I open the throttle

[jstooks1]

I have an evinrude 140 on an 18ft Cobia which was given to me from my father in law. I took it out two weeks ago and after fixing the linkage, the motor ran fine. FOR ABOUT 30 MINUTES. All of a sudden the engine bogged down and died. After Finally getting it started again and few harsh words, Every time I tried to open it up past , lets say , NO WAKE SPEED. It died again. So I finally made it back to the boat ramp two hours later. Since then I have changed the gas , the spark plugs, looked it over the best I knew how and tried it again.Same thing happened. <br /><br />Any help would be greatly appreciated <br /><br />I dont know the year but it is a four cylinder- two stroke. looks kind of old.<br /><br />Cant find a model number either, I think it was rebuilt

 

[12Footer]

Re: Evinrude 140 19?? - Engine dies when I open the throttle

This happens allmost every time a boat is left to sit for a while, and fired-up without dumping the old fuel from the bowls.<br />What happened was,the boat started on the fresh gas, but the bowls had old varnish in them.<br />You will probably find by removing the carb(s), and cleaning them thuroughly,cleaning the filters, and checking to make sure the tank is venting, it will be like old times.<br /><br />Could it be an ignition problem? Sure, but highly unlikely if it ran fine before it was put up.<br />Fuel pumps have rubber diaphrams, so you may need to rebuild this too.<br />It all sounds much more complicated than it really is. You will want to get the manual for it. Since you don't know the year/model or have a number to go by, go by the case style. Shop manuals will cover 10 years or so.<br />Go by the picture on the cover. If it looks like your engine, it will be it or close enough.