So i did a compression test on my K20z block w k20a head and got 210 psi on the 1st then 200-205 for the rest. Just curious to see if anyone else has done this on their rsx and and if so what their readings were. The interesting thing is that the rod/rod bearing is clicking on cylinder 1 so id expect the readings to go down on that one but i guess not

 

Compression testes for leakage through the compression rings into the crankcase, valves, and head gasket. The difference in each cylinder should be about 10% or less in each cylinder. It wont tell you if you have a bad bearing or rod.