1960 evinrude 40 hp with no top speed

[Dickinson]

I have a 1960 40hp evinrude that has not top speed at all. I pin the throttle and it goes a bit faster than an idle but not really more than 1/4 speed for a 40 hp. I have good spark on both cylinders as well as fuel coming though the pump. Carb has been cleand and throttle is pinned inside the carb as well. Any thoughts? Please? Please?

 

[Boss Hawg]

Re: 1960 evinrude 40 hp with no top speed

Read the TOP SECRET files at top of page
You most likely need to
check compression
rebuild carbs
link 'n synk
find/fix air/fuel leaks
check spark
ect ect ect

 

[coolguy147]

Re: 1960 evinrude 40 hp with no top speed

water impeller too

 

[tashasdaddy]

Re: 1960 evinrude 40 hp with no top speed

carb adjustments also.

 

[Boss Hawg]

Re: 1960 evinrude 40 hp with no top speed

And the list goes on & on & on

 

[tashasdaddy]

Re: 1960 evinrude 40 hp with no top speed

as you said 90% of it is covered in TOP SECRET.

 

[MushCreek]

Re: 1960 evinrude 40 hp with no top speed

My guess would be a bad coil. Although they both may spark, they break down under load, and you're basically running on one cylinder. Older OMC's were known for coils going bad with age.

 

[F_R]

Re: 1960 evinrude 40 hp with no top speed

My guess would be a bad coil. Although they both may spark, they break down under load, and you're basically running on one cylinder. Older OMC's were known for coils going bad with age.

Agreed. As in Ho-Hum, here we go again. Another guy trying to fix a lack of power problem by cleaning the carburetor. Instead of me typing it all out agian, just read this thread:
http://forums.iboats.com/showthread.php?t=329196