Xoutpost.com - knocking noise on start up

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I just ordered the tensioner for shits and giggles, see what that will do with an oilchange. Next year will be vanos rebuild. Thanks for the info jcl & m5james. Thanx for the list of parts jayb

I hear the same noise sometimes after it sits for awhile . I was wondering if it could be bearings of some sort in the lower engine

Not bearings, just a typical VANOS rattle. Welcome to aging M62TU engines.

wonder how many folks solved the start-up rattling after using 0-40 oil? does it last long?

Quote:

Originally Posted by m5james (Post 747842)

Not bearings, just a typical VANOS rattle. Welcome to aging M62TU engines.

The problem James is that it only has 55,000 miles on the clock.

Even with 55k the vanos problem can show it's ugly head. Try a new chain tensioner like donone69, but it's most likely the 1400.00 vanos rebuild. I don't believe performance is affected though

Quote:

Originally Posted by PeterBlu (Post 747879)

The problem James is that it only has 55,000 miles on the clock.

I've got a customer/friend who's got a 750iL with only 80k on it...but it's a 95. It's got a grocery list of replacement needs, everything from dried and rotted seals to worn out suspension bushings. Having only 55k on your 01 is awesome, but seals will still wear over time, not just use. Did you mention what oil weight you use?

Quote:

Originally Posted by jst2878 (Post 747729)

I just ordered the tensioner for shits and giggles, see what that will do with an oilchange. Next year will be vanos rebuild. Thanks for the info jcl & m5james. Thanx for the list of parts jayb

No problem bud!

Also add VANOS cam seals x6, P/N: 11311705512

Quote:

Originally Posted by m5james (Post 747971)

I use the recommended oil. I am going to have it checked out by a friend who works at a BMW dealerership and hopefully it is just the tensioner as Justin said.
Thanks for the advice.

Quote:

Originally Posted by shooter (Post 747540)

Wow... Everytime I read the threads you start, its as if I started it. Same noises, same vibrations, and same everything if I had those damn gunmetal 87's! Where the hell did you find those anyway?

Since I know exactly how you frustrated you are trying diagnose your problems:

I have the same noise on a cold start up. It lasts for a second or so immediately after starting. I gave up after countless hours of research with no solid answer. What I found was that its caused by the VANOS and doesn't seem to be a major concern or high priority repair. It sounds wierd buy try searching for "marble(s)" here and bimmerforums.com

http://www.xoutpost.com/bmw-sav-foru...ed-fixing.html

this link is embedded in the above thread:
http://forums.bimmerforums.com/forum/showthread.php?t=1041320

What I have found is that this knock on start up seems to be how my X tells me that it needs an oil change. Its not low or anything, just time for fresh lube.... I change my oil very frequently because when I went to change my oil filter for the first time, I found that there wasn't one. hahaha... what else to do but laugh and flush it. It was completely desolved and turned into a sludgy muddy paste. Knock on wood but I have no leaks, no shakes, no power loss, and no knocks other than the occasional marble clack on start up.
Changed the oil and problem solved every time. Noise comes back usually around 3 or 4 thousand miles
Unfortunately I just became a member of the 6 digit mileage club.

I stumbled across the thread below looking for the link above for you. I have no idea what this guy is talking about or how a rubber bushing can make an engine knock but I thought you might wanna take a look?
http://www.xoutpost.com/bmw-sav-foru...can-sound.html

Completely wrong thread, but did you ever replace your flex discs?

hello mate, i don't get the knocking noise anymore, i previously topped up the oil with a litre, well just under a litre and it was fine, after i topped it up i just use to get a very vague knocking on start up probably 2 to 5 times a week, it was much better and could barlery hear it at all, it took the oil level to just after the max mark on the dipstick, it was due a oil change which i had done 2 weeks ago at my indy using 10/40 oil and now i cant hear a thing ever, runs smooth as anything

as for the flex disc, it looks new so iv not changed it and the vibration is still there:dunno::banghead::banghead::banghead:, it drives me insane