Cylinder head refurbishment, part 6
Over the past couple of days I've disassembled and cleaned the hydraulic valve lifters, in total it's taken about 4 hours! They weren't in bad shape but it's nice to be thorough, and they all have the same 'springiness' now. There's a tiny valve inside, comprising of a ball bearing and a minute spring, which could easily be jammed by gummy oil. Very good article on cleaning the lifters here.