Engine rattle around 2500-3000 rpm

g852grant · 11-25-2015, 07:58 PM

Hi everyone!

I seem to have the signature "marbles in a can" sound coming from my engine from 2500 rpm to 3000rpm almost exactly. It does not happen all the time, but when it does, it's fairly loud. At first, I thought it was just the engine cover vibrating, but after getting some adhesive backed foam and sort of insulating it I found this was not the issue.

I recently did my oil pan gasket, and when I started it up for the first time, I thought I heard a faint version of this sound coming from the cam adjusting unit (part number 11377548388)

I guess my main questions, before I spend $300 on this, are:

1. Will this unit make those rattling sounds?

2. If this is not the right part, what could be?

Thanks
- Grant

stewey · 11-26-2015, 10:26 AM

Hmm I would save the $300 and get a diagnosis first. It could be lots of things :/

Three_thirty_I · 11-26-2015, 03:55 PM

I would start with diagnostics to see if anything comes before replacing parts.

SDemetris · 11-27-2015, 12:15 AM

that sound usually has to do with some sort of chain tensioning.. oil pump or timing chain maybe

g852grant · 11-29-2015, 08:12 PM

Quote:

Originally Posted by SDemetris

that sound usually has to do with some sort of chain tensioning.. oil pump or timing chain maybe

Ahhhh shoot... I just did the oil pan gasket last week.

I did have an incident when I did my oil filter housing seal and drove on nearly no oil, might that have any influence on the problem?

11-25-2015, 07:58 PM	#1
g852grant New Member 4 Rep 8 Posts Drives: 2006 e90 330i Join Date: Jun 2015 Location: Twin Cities, Minnesota iTrader: (0)	Engine rattle around 2500-3000 rpm Hi everyone! I seem to have the signature "marbles in a can" sound coming from my engine from 2500 rpm to 3000rpm almost exactly. It does not happen all the time, but when it does, it's fairly loud. At first, I thought it was just the engine cover vibrating, but after getting some adhesive backed foam and sort of insulating it I found this was not the issue. I recently did my oil pan gasket, and when I started it up for the first time, I thought I heard a faint version of this sound coming from the cam adjusting unit (part number 11377548388) I guess my main questions, before I spend $300 on this, are: 1. Will this unit make those rattling sounds? 2. If this is not the right part, what could be? Thanks - Grant
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11-26-2015, 10:26 AM	#2
stewey Second Lieutenant 71 Rep 246 Posts Drives: 2006 325i 6MT Join Date: Apr 2015 Location: Victoria, BC iTrader: (0)	Hmm I would save the $300 and get a diagnosis first. It could be lots of things :/
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11-26-2015, 03:55 PM	#3
Three_thirty_I Lieutenant Colonel 200 Rep 1,834 Posts Drives: '05 E90 330i Manual Join Date: Aug 2010 Location: Cape Town, South Africa iTrader: (0) Garage List 2005 BMW E90 330i [0.00]	I would start with diagnostics to see if anything comes before replacing parts. __________________ BMW E90 330i (M) '05 (His) \| (Hers) BMW E46 320i f/l (M) '03
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11-27-2015, 12:15 AM	#4
SDemetris FSAE Dude 61 Rep 759 Posts Drives: E90 328xi Join Date: Jul 2012 Location: Pittsburgh, PA iTrader: (0)	that sound usually has to do with some sort of chain tensioning.. oil pump or timing chain maybe __________________ 2007 TiAg 328xi: AA Tune, AFE intake, Full exhaust, 335xi Brakes, H&R RSB, UUC FSB, H&R Sports, Billy Sports...BBS SR 17x8 1985 Gazelle Beige 325e: Poly everything, e24 3.25 LSD, 225 lb weight reduction, Corbeau FX1, Shifter machined by me, roll bar, harness, all the other goodies. My "Racecar"...15x7 BBS RA
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