Chaser86

Hey ive got a 96 acura EL 1.6 and my engine light started blinkin and it started to hesitate so i took it to honda and he said my head gasket was gone and showed me my antifreeze resevoir and it was full of blask oily sluge.. . .. . but when i took it home i checked the radiator and there was no oil in it . . . . just in the resivoir and its not overheating and there no white smoke, my compressions good but i found out that the radiator cap was busted a little so its not keeping pressure. if i get a new radiator cap and theres pressure buildup could it wreck my gasket if it has a small hole or somthin? i dunno what it is HELP