Had a problem for about 4 months where my hydraulic lifters (I think) just make an irritating tapping noise every now and then after high revs, well one does. It's slowly getting a little more often and it's beginning to annoy me. Noise is more apparent when my engine/oil is warm (90oc) Put...

One of my hydraulic lifters on camshaft is making a tapping noise as it's worn slightly and receiving a lack of oil when warming up. Cars serviced well and full of fresh oil and there is no point in replacing the whole camshaft. However I've heard on old cars (16 yrs old) that oil/engine...