1969 Evinrude 18HP Choke Issues

[dragula65000]

It runs good, idles ok, but will only run with throttle with the motor choked, and will not get on plane. It wants to, but it hesitates. With WOT, I opened the choke and it dies out. I tried playing with the idle adjustment with no joy. Motor has to be choked for it to run with the throttle. Im thinking either a new fuel pump, and/or a carb rebuild. It sat for 6 months without being ran. Any tips?

 

[lindy46]

Re: 1969 Evinrude 18HP Choke Issues

carb clean/rebuild

 

[dragula65000]

Re: 1969 Evinrude 18HP Choke Issues

I was guessing the same thing. The idle adjuster works well with it in neutral, but in gear the only way it stays running is choked.

 

[Daviet]

Re: 1969 Evinrude 18HP Choke Issues

Try squeezing your primer bulb when problem is happening, if engine picks up you might have a fuel pump problem. Remove the 7/16 plug on front of carb bowel and remove high speed jet and clean. If that helps your problem, remove carb and rebuild.