I'm working on my 1981 Eagle SW, 258auto. Leaking plastic rocker cover, so I pulled it. The attached pic shows 4 push rods. The 2 on left look fine. The other 2 have some sort of rubber boot around them. I'm in the process of removing the push rods with these "boots" around them, just wondering if anyone knows why someone would put them there in first place? It looks like five push rods have this wrapper.
Thanks.