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· Registered
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77 Posts
Mine has been doing this recently.
I’ve been suspecting a partially blocked Vaporizer as it seems to be regenerating more often. I noticed any time I pull up at home that the idle hunts ever so slightly and my exhaust temp gauge sits over 300c. If I let it sit idling the engine note eventually quietens and the exhaust temp falls.
I checked the Vaporizer fuel line with a vacuum line and it holds some vacuum so it’s partially blocked.
Just waiting for time to attempt to remove it and check it out.
 

· Super Moderator
2019 AMG C43
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15,481 Posts
The EcoBoost engine can have a lumpy idle, it tries to balance power requirements with economy and find the right revs in order to do that.
 

· Super Moderator
2019 AMG C43
Joined
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15,481 Posts
Hi Sean, mines the diesel st not the ecoboost
Apologies, really should look which section posts are in... I would imagine the diesel version would have the same sort of 'energy saving' systems though.
 
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