Originally Posted by Ryan
what will this prove mark? i.e above cranking it normally, i.e obviously valves wont open, but if there not shutting properly in the 1st place its not changing anything? or you mean it will illiminate the HG?
sorry to sounds like a tit
if your lifters are staying open i.e they have jacked, then this will keep the valve open no matter what the cam does, by removing the cams it will free off the lifters to do what they want !
although the readings will be low, as to build compression you need to get air into the cylinders, without the cams the valves should stay shut, so on a good engine the figure will be low, but equal.
a leak doen is the easiest way tbh, but if you havent got one !