i took my car to the shop and they told my my compression is bad...1 piston is showen 60psi and the other 3 is only 20psi....that is bad.....well i was wondering if there is a free online manual to do this....im planning on rebuilding the motor and i was wondering if theres a online site that show u step by step to do this....and what will i need to do this project....its so bad the car wont start...