Overheating and lifter tapping

Hi, not sure from that end but how many km you have on that car, cose if it done 100,00.000-120,00.00 km You realy should pay attention or replace your timing belt, cos the noise you hearing could be from there not your valves, but if not changed in time the damage from that could escalate on that car to anywer $2-3 K, eazy. Anyway it just a thout 4 you. G/luck.
Tony

Some vehicles have a tendency to start getting a lifter tap, when the engine's oil level comes down to the point where it is a quart or more low. I suggest you check the oil level, top it off if necessary, and check to see if it isn't due for an oil change. I would try the heaviest oil recommended for that vehicle..

if you have a stethascope or even a wood dowel i would check the lifters. if you have higher miles this sounds like a hydraulic lifter pumping up. if you change to a heavier oil it will go away or reduce. thats the cheap fix.

this is a very common issue with any of the bmws with n52 and n52k engine,as long as oil level is ok and is being changed regularly than than a "blleding proceedure" may solve this problem, when the engine has been running long enough that it is hot run the engine at idle to 4500 rpm for 10 to 12 min to start, if is still present after this attempt again.It has been said that this could take up to 30 min at longest.The reason for the ticking noise is a very tiny air gap in the hva and or lifters, try this and if does not work than the lifters should be replaced, although this noise doesnt really hinder the performance it does take away from driving such a nice car and having a loud noise come from the engine, good luck

This is due to a clogged oil pan filter and gunked up lifters. Remove oil pan and clean screen filter. Use and internal engine cleaning solution before your next few oil changes to clean valves and lifters.

it is time to recon your head as the guides to the valves are going and a new set of lifter will do the trik

sounds like a weak oil pump, but that could be indicative of a worn engine, i would replace the oli pump first to rule it out.

It could be you are low on oil;using the wrong oil;a possible loose connecting rod,or,maybe a bad or stuck lifter.

Neil

adjust valve lifters or it can have tappet wear

Sometimes the fuel injectors make noise simular to lifters