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2011 c300 crusty acceleration until warm

C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

2011 c300 crusty acceleration until warm

Old 02-10-2019, 12:10 AM
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2011 MB c300
Cool 2011 c300 crusty acceleration until warm

My 2011 c300 has 87k miles and for the past 2k has been sluggish until it's really warm. The best way I can describe what's happening with acceleration is it feels like it's congested. Like when you're trying to breathe with a bad cold. When the car is warmed up it accelerates with the smooth sound and feel as when I bought it. But when it's still cold, it feels like your throat and lungs when they dealing with a lot of phlegm.

Is this possibly dirty sensors for fuel injection? Or is could it be more of a problem in the engine? Is there such thing as a tune up that can be performed for this year/make/model that I might be in need of? I'm willing to do what I have to to make this car last for into the 110k mark. I would love to keep it's performance good.

And aside from that, the service at the dealer a couple services back told me I might wanna consider getting the motor-mounts replaced around 80k or 85k. Is that sound advice? He said that based on the position of the engine at 75k (when he gave this advice) that I should replace them.

Thanks for looking at my question! any help would be super appreciated.
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