1969 6hp

[XRT8]

I just bought a 69 6hp Evinrude. It starts, idles great . It rev's fine in neutral.I put it on the boat and turn the throttle to full , it will run at 1/4 throttle and no more no matter how far I turn the throttle . I can see the carb and timing moving but no change . I have pulled the choke and no change , that will make it run rough . It looks like the old owner had a complete tune up ,fuel pump, carb rebuild ,wires ,plugs . I think he was trying to get it to run but gave up. HELP.

 

[Daviet]

Re: 1969 6hp

First thing to do is check spark and compression.
What do the spark plugs look like?

 

[XRT8]

Re: 1969 6hp

The sparks plug just have aliitle brown on the outer ring , electrode still looks new . I am trying to get a compression checker but I feel that will be fine .

 

[F_R]

Re: 1969 6hp

Your story is classic. Your motor is running on one cylinder. That is almost a guarantee.

 

[XRT8]

Re: 1969 6hp

What is next . How much do you think to rebuild ?

 

[XRT8]

Re: 1969 6hp

I fixed it . One set of points was not gapped correctly . Now it runs great .