E46 318i tapping noise (hydraulic lifters or timing chain tensioner?)

2000 M43 engine 1895cc petrol. Anyone have a similar noise coming from their E46/E36 and know the fix?
Is it the hydraulic lifters or the timing chain tensioner?
It makes this noise when the engine is cold and right up untill it reaches normal temperature. It fades in and out sometimes untill it reaches normal temperature.
It clears temperarally after I rev to about 3500rpm.
Oil used - 0W40.
Tried additives before but they don't work anymore.


Sorry about the noise - windy day!

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[peter69gstar]

hi there.. i have the same propblem with my car.. where did you get your lifters from? ive been looking online non stop cant find them

[DiarmaidGNR]

@peter69gstar w w w . otto.  ie

[jeppu88]

hi did you get this fixed, i have the same problem, if so what was it?

[DiarmaidGNR]

@jeppu88 It was the hydraulic tappets, parts (8 hyraulic tappets) cost about 160euro, and took me about 2 hours to put in.

[budcola678]

I had the same problem, thought it was the lifters for the longest time. Ended up something was hitting one of the belts

[DiarmaidGNR]

@budcola678 Mine was tappets. €150 for parts, 2 hours labour.

[vickk1123]

I've got exactly the same engine and the same problem, but only sometimes at startup.. And yes it's the lifters that make the noise.

[mkarmymail]

Water pump can also cause the tapping noise that sounds like a rod knock.

[DiarmaidGNR]

@kirkie1210 Nope.

[DiarmaidGNR]

@brfr82 It shouldn't be that expendsive, don't bring it to a main dealer anyway.