40 hp evinrude won't stay running

[alfolsee2000]

I recently acquired a 40 hp evinrude. I think it is a 1988 and has been sitting up over a year. It is hard to start, won't ide and won't stay running unless I continually work the choke or pump the bulb. If I put it in gear and rev the rpm's, it seems to run better. Once it stops, the bulb is soft and I have to reprime the bulb to restart it. Where should I start; tank, hose, bulb, rebuild carbs, adjust carbs,fuel pump. I have no fuel leaks. Any help to put me in the right direction, will be appreciated.

 

[Joe Reeves]

Re: 40 hp evinrude won't stay running

Your explanation of the problem and the fact that the engine has sat for over a year indicates that the carburetor is fouled, gummed, clogged.

The cure would be to remove, clean, and rebuild the carburetor with a complete carburetor kit (about $20.00).

The primer bulb going soft is normal. It does not stay hard when running.

http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store

 

[alfolsee2000]

Re: 40 hp evinrude won't stay running

Your explanation of the problem and the fact that the engine has sat for over a year indicates that the carburetor is fouled, gummed, clogged.

The cure would be to remove, clean, and rebuild the carburetor with a complete carburetor kit (about $20.00).

The primer bulb going soft is normal. It does not stay hard when running.

http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store

 

[alfolsee2000]

Re: 40 hp evinrude won't stay running

Thanks for the reply. I will pick up two carburator kits Monday. Do I need to buy a manual also, or does the kit come with adequate information?

 

[JB]

Re: 40 hp evinrude won't stay running

NEVER work on an outboard without a good manual.

 

[Joe Reeves]

Re: 40 hp evinrude won't stay running

I'm in total agreement with JB on the manual issue. The carb kits are simply parts, no instructions.

However, this may be of some interest to you.

(Carburetor Float Setting)
(J. Reeves)

With the carburetor body held upside down, the float being viewed from the side, adjust the float so that the free end of the float (the end opposite the hinge pin) is ever so slightly higher (just ever so slightly off level) than the other end. And when viewed from the end, make sure it is not cocked.

 

[alfolsee2000]

Re: 40 hp evinrude won't stay running

OK, I cleaned and rebuilt both carbs and set the floats. The engine starts but still will not idle. It will run at a fast idle (with the idlle lever up) as long as I pump the bulb every couple minutes, but will not idle no matter what I do. The only way it will restart is if I pump the bulb till it gets hard again. I tried setting the jets different positions but still no help. What should I do next?

 

[tashasdaddy]

Re: 40 hp evinrude won't stay running

fuel pump. did you blow the jets out with compressed air.
http://www.iboats.com/bbboard/bbBoard.cgi?a=viewthread;fid=28;gtid=818798;gpid=818802

 

[alfolsee2000]

Re: 40 hp evinrude won't stay running

Yes I did blow the jets with carb cleaner and compressed air. Is the fuel pump on the side of the engine where the fuel inlet screen is or the other side.

 

[freddyray21]

Re: 40 hp evinrude won't stay running

the manual will show you where the pump is at, but if you follow the gas line coming in it will hook to the fuel pump then the lines from the fuel pump will go to the carb (s)

 

[jimmycc]

Re: 40 hp evinrude won't stay running

hi there ,mines doin exactly the same, i changed the carb for a new 1,also changed the fuel pump today, but it still the same,im at my wits end,i have to continually choke it p or it just dies, it also is very lumpy when revving, when it feels like revving?? any help highly appreciated, jim