glad I asked. This is the same engine as my X5 and I was thinking you were talking about older X5 that had engine similar to my E38. Not the case. My timing comments may or may not be true...you decide. Also, I have not heard of timing guide failure on these engines. My X5 has this same engine (78k miles), no problem. And, basically my '04 E60 has the same engine with 127k miles and no issues.

BTW, no baffle. With all this said, the timing control on these engines is much more complicated than the engine in my E38 and as such the timing tools might be a good idea. Also, if you need to replace the guides, you might as well replace the valve stem seals since you will be so far into the engine. I just did them on my E60 and it was a royal PITA, but stopped all engine oil consumption issues. I purchased the AGA tool for this purpose.

Good luck.

My car has 88k, just started a couple days ago, the valve stem seals is a great idea, I will get them and the tool today, thanks for all the info.


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wow that valve stem seal tool is expensive, for a one time use.

Check your water pump. Mine did the same thing, started as a slight tick then turned into a loud engine knock. Water pump had failed, it did not leak or give any other signs of failure. Good luck

I replaced the water pump last month with the metal impella, but I did check it again and it is good.

after taking your post in consideration, I went back to check my car again, I used brake cleaner and sprayed all the moving part on the belt, when I got to the water pump the noise got softer, this pump was replaced a month ago, it is the HEPU metal impella, so it was the last thing I would suspect, I took the fan belt off before and turn the pump and it seem fine to me, but I guess under load the bearing makes noise, I put the old OE pump back in with some new hoses that needed replacing and the noise is gone for now, I have the timing tool along with all the guides and gasket on hand now, I will still replace it hopefully in the summer when I complete my garage, "Truckedup" mention the water pump that is why I went back to take a second look at it, thank you guys for all the information you provided, I learned a lot more now to complete the work in the future.
FCP Euro said they would give me a refund or replacement pump, this time I will get the OE pump,
thanks to Davidf, truckedup, for the help.

water pump or timing chain/guides noise
 

Good Day. Reading your thread, did you replace the water pump and noise went away, or did you also eventually replace the chain and guides?
I have the same noises with my 07 X5 e70 4.8i. Thanks

The post is from 2014 kidding me.

Can't speak for the OP, but I had a similarish thread about engine noise and it was the WP.


https://xoutpost.com/bmw-sav-forums/...ck-rattle.html

Old thread yes, but, anytime you hear knocking check the 4 bolts on the water pump pulley. If one or two of them are a little loose, it will knock.


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