The trouble with modern design is that university trained engineers with no practical experience design engines and omit little things like the tangs on the bearing shells that stop the shells rotating in the housing and shutting off oil flow.:rolleyes:

Sadly i think you are right there, how can you design something with out knowing how it should all work and perform:(
 
I think that one of the hydraulic lifters in my wifes diesel Evoque is faulty.
It's more likely to be the valve stem top that is worn (due to the roller tip rocker, the valves don't spin to equalise wear, so get a concave top), as they use high valve accelerations, to open the valves quickly.

The concave contact surface allows more valve clearance than the hydraulic lifter can cope with, hence the tappet noise.

Here's and example of the wear on the valve stem top, this is a 2.2 diesel Freelander 2 engine, which was also used in the early Evoque.
Screenshot_20220101-111206_Gallery.jpg



It's generally a sign of extended or missed oil changes, or the use of unsuitable oil types for the engine.
 
Thx for the replies........it has always been serviced by Land Rover according to the schedules so I assume the correct oil etc.
It has not been used much recently so we took it for a good run......the tapping noise has now stopped.
 
Thx for the replies........it has always been serviced by Land Rover according to the schedules so I assume the correct oil etc.
It has not been used much recently so we took it for a good run......the tapping noise has now stopped.
So just gummed up probably as a result of lots of short runs.
 

Similar threads