Blue smoke on startup
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Joined: Aug 2018
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C63 AMG 507 edition
Blue smoke on startup
Hey everyone
I was hoping someone could help me. I recently got my first Mercedes absolutely love the car but ever since I’ve gotten it I’ve noticed that sometimes on startup I see a cloud of blue smoke come from the exhaust however when I’m driving or after it runs for a few seconds it stops. I was hoping that someone here would know what the cause is.
I was hoping someone could help me. I recently got my first Mercedes absolutely love the car but ever since I’ve gotten it I’ve noticed that sometimes on startup I see a cloud of blue smoke come from the exhaust however when I’m driving or after it runs for a few seconds it stops. I was hoping that someone here would know what the cause is.
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Joined: Sep 2014
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2007 Mercedes E63 AMG
Generally for a combustion piston engine that uses valves, valve stem seals are the cause of this symptom. Very surprised as this isn't a reported issue for the M156 even in high mileage situations. Also, with the use of synthetic oils, this generally doesn't easily occur.
You might be able to identify which cylinder is the culprit by analyzing each spark plug for differences in color. If all match with no variation then you may have a different issue that not of a valve stem seal.
You might be able to identify which cylinder is the culprit by analyzing each spark plug for differences in color. If all match with no variation then you may have a different issue that not of a valve stem seal.
