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'59 - 33hp Evinrude cylinder pop
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<blockquote data-quote="Pappy" data-source="post: 402132" data-attributes="member: 3278"><p>First off where is the pop coming from? Carb? or does it sound deeper? Crankcase halves leaking at the sealing line? </p><p>if it is popping back through the carb then reed seal at idle may have an effect. If it sounds deeper you may have a bottom crank seal leaking. If you simply richen the mixture does it go away? If you want to check crankcase seal you can take soapy water and spray along the crankcase seal area and see if it is leaking. Carb or electrical cleaner will do the same. You can check the intake by-pass covers the same way and the exhaust as well although I doubt the exhaust has much to do with it.</p><p>BTW - Evinrude did not manufacture a 33hp in 1959 so you apparently have a later model engine than you think if that is the correct horsepower. The 33hp for EV started around 1965 or so. </p><p>Evinrude did manufacture a 35hp in 1959.</p></blockquote><p></p>
[QUOTE="Pappy, post: 402132, member: 3278"] First off where is the pop coming from? Carb? or does it sound deeper? Crankcase halves leaking at the sealing line? if it is popping back through the carb then reed seal at idle may have an effect. If it sounds deeper you may have a bottom crank seal leaking. If you simply richen the mixture does it go away? If you want to check crankcase seal you can take soapy water and spray along the crankcase seal area and see if it is leaking. Carb or electrical cleaner will do the same. You can check the intake by-pass covers the same way and the exhaust as well although I doubt the exhaust has much to do with it. BTW - Evinrude did not manufacture a 33hp in 1959 so you apparently have a later model engine than you think if that is the correct horsepower. The 33hp for EV started around 1965 or so. Evinrude did manufacture a 35hp in 1959. [/QUOTE]
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'59 - 33hp Evinrude cylinder pop
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