BMW 1-Series Forum (F20) 135i - 1Addicts.com > Second Generation 1 Series Forum > 2012 BMW 1-Series Sporthatch (F20) Discussion > Exhaust problems
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      08-04-2017, 03:27 AM   #1
Lou-91
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Exhaust problems

Is anyone else getting rattling noises coming from the left side of the exhaust on a cold start had it replaced once from BMW saying the baffles has gone but the new exhaust system they put on only 6months old
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      08-04-2017, 04:55 AM   #2
V-Eight
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Yeah I've got the same issue, but mine (M140i) does it not all the time, maybe three/four times a week.

I've noticed that it makes it especially after short time stops, for example when you stop the engine for refueling, and then you go.

For me it's not a real problem, as both M135i/40i and also the M2XX models have this "matter".
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      08-04-2017, 05:02 AM   #3
Lou-91
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Mine happens on a cold start worst is of a morning, sounds like the heat shield rattling but iv checked not that, but soon as it warms up An the flap opens it stops, looks like another trip to the dealership
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