Timing chain guides
 

Hey guys, today I heard a ticking then it became a knocking sound coming the front of my engine, I changed the timing chain tensioner but the sound is still there, I am going to pull my oil pan to see if there are any plastic pieces in there, I am almost sure it is the timing chain guides, anyone had this issue before?, can I check more before pulling the front of my engine to do the repairs.

Checking pan and/or oil filter for debris is a good indication of guide failure. What engine are you talking about? When the guides failed on the V8 in my 740iL, it made a horrible racket that was unmistakable for what it was. Definitely more than a "knock". The chain hitting/rub on side of front timing cover left evidence of shiny aluminum in filter housing. I6 may behave differently.

It's the X5 N62TU 4.8i, I am finishing putting up my lift so I will check the oil pan for broken pieces, the issue now started, I could hear the knocking on the right side only, but I want to repair it before it gets worst


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I am preparing for the worst, I purchased the timing tool and all the gaskets along with the six (6) timing chain guides, I saw some videos on youtube on the M62 which will help a little, I also want to check the rest of the engine as I would have acess and repair as needed.

I was able to replace the guides without the use of the timing tool. It has been awhile, but I vaguely remember marking the cams, etc. very precisely to ensure everything was positioned properly upon reassembly. 60k miles later, no problems. My engine is NOT a "TU"

Thank you for the info, I may try that approach also, because the tool only do one side at a time I think, how did you mark the main sprocket, did you lock the crankshaft?

I marked sprockets and cam with punch marks, etc (many different places including cam to bearing caps, ....). I did indeed lock the crank with the official BMW pin designed for the task. IIRC, the pin is used at the rear of the block and locks the flywheel/ring gear from turning.

Also, if you understand what the timing tool is accomplishing, you can eyeball the cam position by ensuring the flats on the cam (that the tool would engage) are perpendicular to the plane of the head, or parallel to the bearing caps, or... You get the idea hopefully. Plan on replacing the baffle/silencer on the left side of engine as it will be brittle and break when you touch/remove it. I forget its proper name and not 100% sure it is installed on the "TU" engine.

Thank you, I am not sure what the baffle/silencer thing is but I will do some more research, I have a pretty good understanding about the timing and the procedure but try to get all the info so everything goes smothers, although it never does.. thanks again.

Provide you VIN (7 digits) and I will see if you engine has the baffle or not and let you know part number.

sure L164141

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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... check also 8 bolts on the crank pulley. 4 out of 8 on my X5 4.8 were loose, not sure how, but they were

I had the same : N63 engine but I believe the mechanical pump is similar


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