Lining up the dots with the colored links is more precise than eyeballing the alignment of the other two marks.
Lining up the two marks that face each other gets the cam timing close. Having the two dots lined up with the colored links ensures the timing is right on.
Have you had the valve covers off to see what the valves are doing as each cylinder comes up on compression TDC?
A cylinder leak-down test will show you where the leaks are; intake valves, exhaust valves, rings.
Another thing to consider... an intake valve that fails to open will result in a zero compression reading.
2008 Unlimited Rubicon Automatic
Last edited by ronjenx; 10-08-2017 at 12:38 AM.