Valve work- 99 P71

Results of a recent compression test are below:

Results are dry/wet...

1) 130
2) 110/130
3)130
4)110/125
5)110/125
6)130
7)110/125
8) 0/0

I am hoping for a broken valve spring or jimmied cam follower that I can easily repair.

Once the valve cover is off, how far down do you have to disassemble the head to replace vlave springs or cam followers? Any special tools needed? I have the tool to use compressed air to hold vlaves in place with springs off on an assembled motor and the valve spring compressor to use with it on a standard pushrod motor. Will these be of any use to me on this project?

Thanks!

Make sure the valves are closed and the air is in the cylinders before pulling a spring.

Or stuff a small rope in the cylinder and rotate the engine by hand until it lockes the rope to the valves.