Okay heres what happened one day I was driving my truck and decided to take the muffler off and run a straihgt pipe just to see if I like it. Come to find out I did so I left it off. Since I can here it know going down the road I heard it popping/missing and thouhgt it could be the points so I replaced the points and condenser and it stills does it. So I wind up taking it to my "mechanic" and he says it is a burned valve and blown head gasket......know I take it to my "other mechanic" he says that it's not a burnt vavle and head gasket because if it was the head gasket it would smoke which it doesnt. He said I need to adjust the valves so I did and quess what ,IT STILL DOES!!!! so what do yall think it is?
