Not sure if any of you guys are in M3forum.net but I got this dreaded rattle sound in my M3, at first I thought it was coming from vanos (and listening to it old school screw driver style, not just me but a friend of mine also agreed it does sound like its coming from the vanos listening to it this way but just straight up listening to it he said it sounded like it something from outside is loose). Took off the belts to see if its something accessory driven and the rattle is still there, although the tone of it changed a bit, and the volume is not as loud but still loud rattle sound.
So initially I thought "Hey probably cam bolts, stop driving the car asap til its done." Well.. a month later I think here I am.. I'll put the list of things I have done so on trying to fix it..
Beisan seals
Beisan solenoid pack seals
Beisan anti-rattle kit
Cam bolts
Beisan Upper chain guide
Chain tensioner
New belt tensioners
New water pump
Only thing vanos related that I haven't touched is the accumulator.
Here's a video of the rattle..
Anyone here has any idea what it is? doesn't sound like rod knock to me and to my friends. But at this point I am really stumped on what it is.
So I am going to shoot in the dark here, but did you tighten the 13mm behind the thermostat housing on the timing case? When it gets loose, it will sound like the VANOS rattle.
It will be #10 here: http://www.realoem.com/bmw/enUS/show...diagId=11_3005
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
did not need to loosen that bolt but I will check when I get back on land tomorrow.
I know it sounds simplistic ...if you have more than 5000 miles on your oil.....try changing it....as it wears ...engine gets noisier.
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