time to change the belt ?

is it normal for secondary pump to quit ? It's the way it works.
and yes metal noise that i am concern about, I see,does it do it constantly or it was the first time?
and i am not really famiiar with vanos noise, is that bad ? VANOS rattle is a common thing,not sure if it's normal,mine disappears after a long Highway speeds drive,I am planning to get a thicker oil and check if it helps a bit to reduce the noise,but it doesn't really bother me.
stuck valve i even wont be able to check myself It was just a guess,I would recommend you to chime Weasel or Killcrap on this board,and ask for their opinion.As I said I had it only once and it was my old(sold :D) e36 318i when it was overheating(cracked head and engine swap afterward),it would come and go then come and go again.
But I am not a specialist,so don't take it as a diagnosis for your problem.

hello!

i think i know what you mean. search youtube or google for bmw hva ticking.

That's the first thing I noticed :wow:. Cold weather means there is more moisture in the gas. You let that tank run that low, all sorts of bad stuff try to get into your engine. I shutter when I get below half, in the winter those gas tanks stay above 3/4. Maybe just me being weird.

I cleaned my engine with P21s All purpose cleaner; engine looked fantastic!!! belt started to squeek ever so slightly. Took me a few days to narrow it down. Baby powder on it and all is well now.

:D:D:D:D:D:D:D:D:D:D:D:D:D

Wow that was some of the best snow off road fun I have seen. That sounded and looked amazing

Welcome to the club :thumbup:

It's not bothering noice at all. I put 10-60 in it and doesn't dissapear. so...

The 4.8 engine have no VANOS. It has Valvetronic. The noise in the video remember me on HVA ticking.

Look at this...

Hey,Vanos and Vavletronic are two different things and both are present in
e53 4.8is N62 B48 engine (Double Vanos and Valvetronic)

BMW N62 - Wikipedia, the free encyclopedia

Happy New Year!

hello.

this is wrong. you can have only the one or the other.

N62 engine e53 before facelift got VANOS.
N62 engine e53 after facelift got Valvetronic.

you can see this in bmw parts catalogue too.

Anyway it's not quite correct IMO.
I still rely on Wiki in this one.