Wastegate rattle

Sparky68 · 12-06-2012, 09:43 AM

Started the car up at lunch time after it had sat cold for 6 hours and noticed a metalic clattering sound. Oil was obviously cold so thought it could be tappets?

Does the wastegate rattle appear much at idle?

Nigelo · 12-06-2012, 10:11 AM

Could also be the exhaust flapper - on a cold start the extra exhaust gas can sometimes set it wagging.

Sparky68 · 12-06-2012, 10:15 AM

Quote:

Originally Posted by Nigelo

Could also be the exhaust flapper - on a cold start the extra exhaust gas can sometimes set it wagging.

Makes sense, it is quite a loud noise. Mine has been unplugged from the vacuum so the more i think about it, the more likely you are correct.

12-06-2012, 09:43 AM	#1
Sparky68 Brigadier General 684 Rep 4,261 Posts Drives: 2016 M2 Alpine White Join Date: Oct 2012 Location: Cambs UK iTrader: (11) Garage List 2016 BMW M2 [0.50] 2017 BMW F30 330D [0.00] 2014 M135 [0.00] 2007 BMW 335i [0.00]	Wastegate rattle Started the car up at lunch time after it had sat cold for 6 hours and noticed a metalic clattering sound. Oil was obviously cold so thought it could be tappets? Does the wastegate rattle appear much at idle? __________________ OG M2 7sp DCT Masata FMIC - Masata Boost Pipe - Cobra Catless DP - Powervalve Exhaust - Devilsown Methanol Injection BM3 Stage 2
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12-06-2012, 10:11 AM	#2
Nigelo Lieutenant 30 Rep 540 Posts Drives: E92 335i se Join Date: Aug 2011 Location: Northern Ireland iTrader: (1)	Could also be the exhaust flapper - on a cold start the extra exhaust gas can sometimes set it wagging.
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