1965 Evinrude 90hp - problemos'

Evinrude Boater

Lieutenant Junior Grade
Joined
Jul 6, 2004
Messages
1,144
Re: 1965 Evinrude 90hp - problemos'

another thing,, the water started turning all different colours? gas? oil?

lean and rich have to do with the idle screws, i have them all tuurned out 3/4 of a turn from seated.

The water will turn colours as unburned fuel containing oil is expelled out the exhaust. This could be partially due to it not running properly but some is to be expected from a motor of this era.
The idle screws, as you call them, are likely the low speed screws. I would follow the instructions as directed in the Joe Reeves his FAQ post. http://forums.iboats.com/showthread.php?t=167352
This is assuming there is nothing else wrong with the operation of your motor. No sense fine tuning until you know everything is operating as it should.
While you're waiting for better weather I would suggest reading many of the FAQs to further your understanding of your motor and possibly answer some additional questions you might have.
 

petermuhis

Cadet
Joined
Apr 14, 2008
Messages
13
Re: 1965 Evinrude 90hp - problemos'

yep, that is my plan..

thanks for your help buddy. You have some good insight into my problems, unlike others,,,


i will read up, do some tests do AS much as i can, then if all else fails i will take a vieo of the problem and let you guys know, hopeflly this summer i can have this boat up and running.

thanks again..
 

Evinrude Boater

Lieutenant Junior Grade
Joined
Jul 6, 2004
Messages
1,144
Re: 1965 Evinrude 90hp - problemos'

Seems like it's idling fast. I see it kicking a bit causing the motor to wobble at a stand still. Could be a lot of things causing it to run rough. You need to troubleshoot in a systematic manner to check all functions of ignition and fuel delivery.
Princess Auto has some really handy spark plug wire testers. It's a set of four spark indicators that light up when the plugs fire. Item number 2990138. Put all four on and go for a run. You'll need to have someone at the stern to watch them as you run the motor to see if one or more are not firing
Here's a video of mine at a fast idle for comparison.
http://www.youtube.com/watch?v=PPr7wq2c5fo&NR=1
 

petermuhis

Cadet
Joined
Apr 14, 2008
Messages
13
Re: 1965 Evinrude 90hp - problemos'

do you think that it might be my coil? that it is to small and not putting out enough power? i dont know how they work, and what kind of power has to come out of the coil to mkae this engine run good.
 

R.Johnson

Rear Admiral
Joined
Sep 24, 2003
Messages
4,446
Re: 1965 Evinrude 90hp - problemos'

That carb is 4 carb's in one casting. Where did they find the part's to rebuild that. Where did those 4 new pistons come from.
 
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