Home › Forum › Ask A Member › 1967 Mercury Merc 60 6hp Sneezing and stalling › Re: 1967 Mercury Merc 60 6hp Sneezing and stalling
February 26, 2018 at 4:45 pm
#71652
He was talking about the "Crankcase Halves", not valves. These cases are split at the crankshaft plane. The flat surfaces can warp, or for what ever reason can have air leakage at the sealing surface. The case is bolted together, and if you look at them, that mating surface is what Jerry was talking about. Carb cleaner, or any other spray that you spray along the seam will plug the leak momentarily and you should see a difference in how the motor runs.
Steve