Discussion Starter · #1 ·
I have installed umbrella type valve stem seals on the intake valves of my deisel. I have just learned diesels don't use seals on the intake valve stems. Should I remove these for better lubrication on the intake valves or will it be all right to leave them in? Heads are not on the truck yet so it is not a big deal to take them out. I am working on a 1994 6.5 F code engine.