Rattling after service

avi312singh · 08-07-2022, 10:10 AM

Hi after I got a service done from the garage I get a rattling when revving the engine or accelerating on an incline. It sounds like it is coming from the dashboard area but I suspect it is something under the bonnet any ideas as to what it could be?

I noticed the mechanic forgot to put the top 2 bolts in at the top which are now silver, just on top of the engine cover... Could that be it? It is a tight fit though
E90 2010

Phil325i · 08-07-2022, 11:25 AM

Could be anything - even a mechanic's tool left somewhere! Why not use a rubber-headed mallet to gently tap everything under the bonnet and see if you can reproduce the rattle?

TGTIW · 08-08-2022, 07:48 AM

And while you're at it, clean your engine bay.

Noticed the cover is off the center "strut brace" bolt, was that removed for the service? Check the torque on the bolt, if that's loose it would sound like it's coming from the dash.

Phil325i · 08-09-2022, 02:40 AM

Quote:

Originally Posted by TGTIW

Noticed the cover is off the center "strut brace" bolt, was that removed for the service? Check the torque on the bolt, if that's loose it would sound like it's coming from the dash.

Good spot!

Tambohamilton · 08-09-2022, 03:39 AM

I'd bet it's the plastic engine cover isn't seated correctly

avi312singh · 08-10-2022, 05:26 PM

Quote:

Originally Posted by TGTIW

And while you're at it, clean your engine bay.

Noticed the cover is off the center "strut brace" bolt, was that removed for the service? Check the torque on the bolt, if that's loose it would sound like it's coming from the dash.

Thanks for that! What bit do you mean in particular? The engine cover itself is loose or the black bit that sits on top of it?
The guy did an air filter and oil filter change so not sure what he took off to be honest

Phil325i · 08-11-2022, 08:36 AM

Quote:

Originally Posted by avi312singh

Thanks for that! What bit do you mean in particular? The engine cover itself is loose or the black bit that sits on top of it?
The guy did an air filter and oil filter change so not sure what he took off to be honest

Just to the right of the passenger side wiper arm pivot there is a hole in the plastic cowl (there should be a grommet/cover on this). In the hole you should see a bolt head. Check if this is tight.

Tambohamilton · 08-11-2022, 09:08 AM

BTW it's pretty important you get that little round cover fitted, otherwise next time it rains you'll get wet feet

Pretty sure it's needed to keep water out of the dash/passenger compartment.

avi312singh · 08-11-2022, 05:08 PM

Quote:

Originally Posted by Phil325i

Just to the right of the passenger side wiper arm pivot there is a hole in the plastic cowl (there should be a grommet/cover on this). In the hole you should see a bolt head. Check if this is tight.

Oh wow fair... That was a good spot!!

08-07-2022, 10:10 AM	#1
avi312singh Private 8 Rep 74 Posts Drives: E90 LCI M Sport Join Date: Apr 2017 Location: United Kingdom iTrader: (0)	Rattling after service Hi after I got a service done from the garage I get a rattling when revving the engine or accelerating on an incline. It sounds like it is coming from the dashboard area but I suspect it is something under the bonnet any ideas as to what it could be? I noticed the mechanic forgot to put the top 2 bolts in at the top which are now silver, just on top of the engine cover... Could that be it? It is a tight fit though E90 2010
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08-07-2022, 11:25 AM	#2
Phil325i Brigadier General 624 Rep 3,200 Posts Drives: E92 325i MSport Coupe Join Date: Apr 2012 Location: UK South East iTrader: (1) Garage List 2009 BMW 325i Coupe [6.00]	Could be anything - even a mechanic's tool left somewhere! Why not use a rubber-headed mallet to gently tap everything under the bonnet and see if you can reproduce the rattle? __________________ E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; 3 x chassis braces; diff brace; N53 V-brace; 034 subframe inserts; BMS clutch stop; BMS CDV; RE g/box mounts; Delrin shift bushes; Saikoumichi OCC; Cyba scoops; BMW Perf Exhaust; HEL s/steel brake hoses; M3 rear spoiler; Recaro Sportster CSs; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof/clear front
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08-08-2022, 07:48 AM	#3
TGTIW Second Lieutenant 131 Rep 249 Posts Drives: 2010 328i Join Date: May 2013 Location: Knoxville iTrader: (2)	And while you're at it, clean your engine bay. Noticed the cover is off the center "strut brace" bolt, was that removed for the service? Check the torque on the bolt, if that's loose it would sound like it's coming from the dash.
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08-09-2022, 03:39 AM	#5
Tambohamilton Brigadier General 3061 Rep 3,916 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	I'd bet it's the plastic engine cover isn't seated correctly
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08-11-2022, 09:08 AM	#8
Tambohamilton Brigadier General 3061 Rep 3,916 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	BTW it's pretty important you get that little round cover fitted, otherwise next time it rains you'll get wet feet Pretty sure it's needed to keep water out of the dash/passenger compartment.
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