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2010 C300 exhaust sputtering noise

Old Jun 6, 2013 | 11:43 PM
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2010 C300 & 2014 E350
2010 C300 exhaust sputtering noise

What is this exhaust sputtering noise coming from? Is there a vacuum leak? It only happens on cold start. After the car warms up it is gone.


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Old Jun 7, 2013 | 01:14 AM
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2011 C300 4MATIC
Sounds like a normal cold start to me, but I have an x-pipe.
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Old Jun 7, 2013 | 01:43 AM
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'13 GLK350 4matic,'10 C207,'15 GLA250,'07 Honda Odyssey, '18 GLE 43, '24 EQS 580
I have the exact same thing. If i try to hit the gas right after the car started in the morning it sounds like a different engine and makes a popping sound on the muffler. I kinda liked it though.
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Old Jun 7, 2013 | 04:32 PM
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Mine does this, too. All stock. My 2005 C230K did this to. Think it is the secondary air injection.. but not sure. Seems normal.
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Old Jun 7, 2013 | 11:48 PM
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Originally Posted by shotgun_banjo
I have the exact same thing. If i try to hit the gas right after the car started in the morning it sounds like a different engine and makes a popping sound on the muffler. I kinda liked it though.
That's very very bad on a cold start....
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Old Jun 10, 2013 | 03:07 PM
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Mine does the same and sometimes I can feel it. Like it's misfiring. After warm up, it goes away so I assume this is normal. I dont recall this happening on my previous 2005 c230 kompressor. Had that for 6 years.
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Old Jun 10, 2013 | 04:56 PM
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2010 C250 4Matic
Mine does this also. I have a 2010 C250. I love the warm up sound. Totally normal.
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Old Jun 15, 2013 | 08:09 PM
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2012 C300 sport
my 2012 c300 does it too
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