What symptoms would a blown head gasket show. Engine will run for a second and die. Have checked and rebuilt carb, fuel pump, replaced hoses, etc. I feel certain this is not a fuel problem having rebuilt the entire system which looked very good to begin with.I have spark. Was running great then died. Wouldnt restart, then suddenly did. Ran a minute or so then died. Ever since just runs a short period (few seconds at most) then dies. I looked in the spark plug hole on the starboard side and the pistons appear wet. The port side doesnt appear the same. Any help would be appreciated. The engine is old, however is in very good shape. I'm going to do a compression test today. What pressure should the cylenders read??? Thank you for your help in advance.