pyroymaniac

i recently have started to hear a knock in the top half of my engine im a little pissed because i had to go to boot camp so my car is sitting at home till i can finish my training and go back home and take apart my engine and try and figure out what im up aginst its more of a tick then a knock i belive its one of my rockers but im not sure if any one has any input that could help me out please feel free to share im stuck in maryland till christmas and my car is in texas so i need to start getting it in my head what i need to do so i can get my car ixed as soon as possible when i finaly get back home