One question...the Delorean has Hydraulic lifts? I didn't see any when I was rebuilding my engine. Over head cams don't use hydraulic lifts, correct me if I am wrong. The adjustment of the valves is fairly simple, follow the procedure in the shop manual. It will require you to remove the valve covers to access them. The adjustment screws are in plain sight right ontop. You will need an open end wrench (I don't remember the size of it off hand) and a screw driver to to turn the adjusting screws. The nut on the screw is a locking nut so make sure you tighten it back after you adjust it. It is common to perform routine adjustments to a non-hydraulic lift system like the Delorean setup. --- In dmcnews@xxxxxxxxxxx, "John Hervey" <dherv10@xxxx> wrote: > Nathan, If the lifter was sticking then you could probably adjust the > valve lash and the noise would go away but you would know it wasn't > right because of how far down you would have to adjust. Most likley > the lifter has lost it's hydraulic holding pressure and needs to be > replaced.