I replaced the valve stem seals on my 560sl a while ago, but the car recently started blowing blue smoke on start up, and three plugs are now oily. I would therefore like to replace the seals on just those plugs now and the others later, if I need to, rather than replacing all of the seals now.
I was thus wondering whether I need to remove all the plugs and/or rocker arms to turn the engine by hand, or whether I can get away with removing just the rocker arm and plug of each cylnder, as I'm working on it.
Also, I was wondering whether I should clean out or replace the camshaft oiler tubes while I'm in there, considering that the car has about 175k on it?
Thanks in advance for the help.
Larry