Originally posted by mtber
You guys forgot to mention that loss of compression can be created by bent valves & valve seals etc..
A Good way to check this is by putting oil in the cylinder above the piston, then try a compression test. if you get the same compression you had before then you can bet its the rings or the valves.its the rings if the oil leaks through and goes right to the oil pan. If its still there then its your valves.