Hi guys, I have a noisy set of hydraulic lifters which I like to replace myself. I cant seem to find a good enough guide on the net on how to do it. Does anyone know of any guides and also can someone comment on the job and where a diy'er is likely to struggle or have problems? I am very competent, I have carried out loads of jobs on the car in my time. Also please indicate what special tools are required. I do not at any cost wanna attack a job without the right tools.