Home › Forum › Ask A Member › 1955 Evinrude 25hp Big Twin No Start › Re: 1955 Evinrude 25hp Big Twin No Start
May 11, 2018 at 6:43 pm
#75797
Have had similar issues with 1950s big twins. Even though the carb was rebuilt and I had replaced the needle gaskets, added needle gaskets were required. Apparently the needles were not sealed. Believe the result was too lean a mix. Now anytime I notice poor starting or running is insensitive to needle settings I look to add needle gaskets.
On these running engines pre 1955 I saw compression in the 90s. Post 1955 saw compression in the 130s. I am near sea level so don’t know a correction.