Quote:
Originally Posted by carl0s
I'm googling "n62 rattle noise" and I ended up here on the topic of chain guides again!
I posted a bit about the N62 chain guides previously on this forum. They did update the guides on that engine as well, and I can tell you that I had bits of plastic in my oil pan from them, and so they do fail on the valvetronic N62 engine as well!
I did end up replacing both sides in the end - heads off on the side that needed it to get the chain guide off, and head off on the other side as well 'cause it seemed stupid not to do the stem seals and secondary air whatsits at the same time.
some pics here:
http://www.xoutpost.com/948285-post16.html
Now, anyone know why my engine has an intermittent rattle from around the alternator area? It seems like it could be the idler pulley. i hope so! waiting to cool down to see. It sounds *bad*. |
The timing chains guides break due to age and have zero to do with wear...very scary. Guys here have broken guides and only know it...I did and found it when I changed the valve cover gasket.
I have the same noise still, it's the vanos losing oil pressure from a bad seal.
Beisan Systems - Procedures - M62TU Vanos Procedure
I'm going to post pictures of my guides that look new but broke because of defective material at 85k. I have an 2002.
Every timing chain guide repair also needs the vanos rebuilt no matter what.
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2002 X5 4.4i Sport Wheels
2014 X5 35i M Appearance & suspension package
1995 Porsche 993
1972 Porsche 914-6
2020 GLE 450 Twin Turbo
2019 Alfa Stelvio 500hp Quadrifogilo
Many motorcycles
