Rover 200 & 400 Owners Club

Any advice, experiences, please..
K series vvc, sweet as a nut when cold, as the oil gets warm a tappet announces itself quite loudly. Ive changed the oil and filter (10-40 from a reputable supplier), run a liqui - moly through as well but to no avail.
It`s done this since ive owned the car (almost 4k miles now) I can live with it but would rather not ; any suggestions, maybe replace the tappets ??

Are you sure it’s tappet noise and not VVC mechanism clack? A video would be good

thanks for the reply - & no Im not sure its not the vvc, tbh i know littla about the mechanism
I will try to upload a video

I had this problem on a 1.4 wet liner K series [ noisey tappet ] running a full synthetic shell helix 5-40 cured it after a while.

Thankyou for your reply
Certainly worth an oil change

Im not sure its not vvc mechanism noise, Ive got cold and hot videos,got no idea how to upload them though, sorry !