this guy don't know any thing about mechanics,he should have taken the first comp. test then put some oil in the plug hole and take another test if comp. came up it is bad rings but if it didn't its bad vaLves or head gasket. #2 u don't have to mark the rod because they have a pip on them and u j...
i don't know how long u have been welding but u never weld with a battery near by,ur not a very smart person dumb dumb