Do I have collapsed/dead lifters??
I've been trying to get my valves adjusted to get back my compression, and have been having some difficulty.
First go: Adjusted as per ford manual (each cycl @ TDC, then adjusted with feeler guage)
Result: vacuum improved from 10-12 to a solid 19in hg at idle. Ticking was really really loud.
Odd observation: when adjusting, I noticed that all rockers except the ones on number 4 did not appear to have any spring to them - ie the lifters would not compress. On number 4 the lifters would compress and were springy. This seemed odd but I continued on.
Then: Tightened up each valve 1/2 turn
Result: Lifters still quite loud. Vacuum went down to 17in
Then: Tightened each valve 1/4 turn
Result: still quite loud, vacuum to 15 in
Then: Gave up and tried comp cams method of adjustment. (have inlet open, tighten exhaust till zero lash + 1/2 turn and vice versa)
Result: Vacuum down to 10in, me pulling my hair out. Noticed again that #4 would compress but all others wouldnt.
So - do I have shot lifters on all but cyclinder 4??