hi, i have a b18c5 and i recently changed the cams. when i changed the cams the timming belt slipt and i ended up doing a compression test and #1,3,and 4 where fine, but #2 had no compression at all. soo, i took of the head brought it to a machine shop and they replaced only the intake valves, becuase they looked bent. i know that it is problubly the exhast valve that is bent, but before i take the head off again i just wanted to make sure it was nothing eles. i have also checked the valve clearence. thanks

 

there's only a couple of things that can cause a loss of compression in a cylinder...
-The compession rings are leaking/ broke/ missing
-Your head gasket is messed up/ not sealed correctly
-Your valves are bent: exhaust or intake or both
-You valve springs aren't returning your valves to close position

 

You need to get a leak down test done at a shop so you dont have to do this job three times.