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      01-22-2015, 05:35 PM   #1
darknetone
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Rattling sound, like a paint can from the engine

I have a rattleing sound, kinda like what you'd get from shaking a spray paint can commit from the front of my M54 3.0 engine. I hear it at idle once the car is warm, it is not as loud when the car is cold.

On note the car has 104K miles on it if that helps... Also I unplugged the DISA valve and the noise is still there. I probed around with a automotive stethoscope but could not find the source.

Any ideas?
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      01-22-2015, 07:37 PM   #2
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It might be one of the pulleys given your mileage. Remove the belt and manully rotate the pullys. They should be silent.
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      01-22-2015, 08:28 PM   #3
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I was thinking maybe a belt tensioner maybe. I'll be doing a VCG and plugs ths weekend as well as DISA recon. If I have time left I was thinking about checking the tensioners. Will post back my findings. However and other guesses are welcome. I may post a video so everyone can hear this wonderful noise.
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      01-22-2015, 08:58 PM   #4
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Since you're doing the VCG, consider also doing the rattle and seal repair => http://www.beisansystems.com/products.html
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      01-22-2015, 09:07 PM   #5
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My guess will be the Vanos.
I overhauled mine last year, no more rattle can noises
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      01-23-2015, 06:16 AM   #6
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Quote:
Originally Posted by dbarton62 View Post
My guess will be the Vanos.
I overhauled mine last year, no more rattle can noises
I might agree but I have none of the VANOS symptoms, the cars is smooth through out it's entire range, no hesitation. and I get good MPG. I did stethoscope where the VANOS was and no unusual noise. However I still wonder...

I did plan on doing VANOS even before I bought the car, looked at both Dr.VANOS and Beisan, I did a lot of Z4 research. I perhaps even went a bit crazy by making a list of parts and costs for things I knew I'd need/want to do to the car before I bought it.

So this leads me to ask, since it is something I did not read, will the VANOS make noise before the other symptoms appear?

I am gonna check the tensioners this weekend along with my other activities.

Thanks much for you input!

Last edited by darknetone; 01-23-2015 at 06:23 AM.
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      01-23-2015, 06:23 AM   #7
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Quote:
Originally Posted by XMetal View Post
Since you're doing the VCG, consider also doing the rattle and seal repair => http://www.beisansystems.com/products.html
AS noted in my post above, I have no other VANOS symptoms, I guess it could just be the bearings, the Beisan Systems rattle kit just might be the thing, at least until I go whole hong on the VANOS unit.

Thanks much for you input!
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      01-23-2015, 11:19 AM   #8
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Quote:
Originally Posted by darknetone View Post
AS noted in my post above, I have no other VANOS symptoms, I guess it could just be the bearings, the Beisan Systems rattle kit just might be the thing, at least until I go whole hong on the VANOS unit.

Thanks much for you input!
I didn't have any VANOS issues or symptoms either when I overhauled it on my M54 X5 last year (with about 96K miles on it at the time). But I figured "while I'm in there" doing my VCG, it's only about $120 worth in parts (seal & rattle kits), I will never have to wonder about it again since the seals are already at about 100K life. The engine has been idling like butter now.

I'm planning on doing a similar overhaul on my S54 MC on the next inspection when doing my valve adjustments.
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      01-23-2015, 11:58 AM   #9
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Quote:
Originally Posted by darknetone View Post
I might agree but I have none of the VANOS symptoms, the cars is smooth through out it's entire range, no hesitation. and I get good MPG. I did stethoscope where the VANOS was and no unusual noise. However I still wonder...

I did plan on doing VANOS even before I bought the car, looked at both Dr.VANOS and Beisan, I did a lot of Z4 research. I perhaps even went a bit crazy by making a list of parts and costs for things I knew I'd need/want to do to the car before I bought it.

So this leads me to ask, since it is something I did not read, will the VANOS make noise before the other symptoms appear?

I am gonna check the tensioners this weekend along with my other activities.

Thanks much for you input!
I recall only really having the rattle although I was already supercharged and having tune issues so the other symptoms may have been present and just didn't notice them.
The Vanos overhaul certainly got rid of the marbles.
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      01-25-2015, 04:17 PM   #10
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I must say, I am not sure how I over looked this, see picture, looks like I have a warped valve cover, courtesy of the last wrench monkey to touch the car. Unless some one on here can tell me this is how the valve cover normaly looks.

I have only had the car for 2 weeks so I really don't have a good view its history... Just going throught the car a little at a time fixing stuff. Comments?
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      02-02-2015, 05:33 PM   #11
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Just an FYI/update

Got sick had to hold off on car work but I am alive again. So,...

I am going to replace the valve cover, and the gasket, bolt gaskets, put in new plugs, also am going to drop in a DrVANOS ( which should arrive this Wednesday ) as well.

If anyone wants needs picts of anything, while I have her open let me know.
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      02-17-2015, 09:45 PM   #12
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How did this go? My car has been making a similar noise, and I'm trying to figure out what it is. It sounds like it's coming from the front of the engine near the belts, and the rattling noise speeds up when I hit the gas.
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