Originally Posted by MARTINSR
Well I am thinking it's what I was told when it first started, some sort of ignition break down. It "bucks" at low cruise it seems like it isn't getting any fuel.
Brian. pop the distributor cap off and check your points gap. Make sure it's correct. Also see if the distributor shaft has any side to side movement. The shaft bushing might be worn excessively.
Things to eliminate.