I am recently down and out for the second year in a row. Motor (Evinrude e115tleor) has 75psi in lower port side cylinder compared to 120psi in the other 3. Upon disassembly i have come to find out that this motor may have been opened up before. I bought it for $600 in april 2012 to replaced blown ProV 150 and it has run pretty good up until a week ago when I could not get it started. That led me to check compression. I am quite certain that a previous owner had only the starboard side bored to 0.030 over.
Is it necessary to have all four cylinders bored to 0.030 over or was the previous owner fine to have rebuilt the motor leaving port side standard? I have the motor completely torn down as of tonight minus crank and piston removal. Waiting on service manual to continue and advice on this situation. From what i can tell thus far the bad cylinder doesnt seem bad at all but the top of the piston has some knots (for lack of a btter word) around the edge. I am really in no position to be spending alot of money but dont want to lack the essentials putting it back together. Any advice or input would be appreciated. Thanks!
Is it necessary to have all four cylinders bored to 0.030 over or was the previous owner fine to have rebuilt the motor leaving port side standard? I have the motor completely torn down as of tonight minus crank and piston removal. Waiting on service manual to continue and advice on this situation. From what i can tell thus far the bad cylinder doesnt seem bad at all but the top of the piston has some knots (for lack of a btter word) around the edge. I am really in no position to be spending alot of money but dont want to lack the essentials putting it back together. Any advice or input would be appreciated. Thanks!