Cloud of Blue Smoke at startup
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Cloud of Blue Smoke at startup
I started my C320 this morning (~65-70*F) and a huge cloud of blue smoke emitted from the exhaust, I then revved the engine a little to see if more blue smoke would come out, but none did...also, the car smelled full of odor after that as well as the surroundings.
Now in my feeble technical mind, I would say that it was oil, but any other ideas? And more importantly, why would a relatively new car do that?
Now in my feeble technical mind, I would say that it was oil, but any other ideas? And more importantly, why would a relatively new car do that?
Super Member
Joined: Jan 2002
Posts: 875
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From: Los Angeles
2002 c230k
Yep, a small break in the headgasket can cause oil to drip into the cylinders and overnight there was enough seepage to cause your cloud to form but not enough to be visible after the initial oil is burnt. Go to the dealer and tell him you've got a blown headgasket and unless he wishes you to blown yours he had better fix it!
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From: Ohio
2010 C300 4matic
By chance, did you happen to start up your car once or twice anytime prior to this to move it a short distance? If so, you can load up the cylinders and you'll get some smoke when you start it up. I see it all the time on brand new cars that are started and moved and then shut off quickly.
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From: The blue white rock, third out.
2002 C230 Coupe(M111)
Bad Valve guide seals are usually the source of smoke at startup. Overfilled oil level can also cause it, as can a stuck PCV - although that usually causes mild oil consumption.
If you suspect a weaping head gasket, check the spark plugs. The guilty cylinder(s) will often have oil or burn oil deposits on the plugs.
At any rate, its dealer visit time.
If you suspect a weaping head gasket, check the spark plugs. The guilty cylinder(s) will often have oil or burn oil deposits on the plugs.
At any rate, its dealer visit time.
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Well, the oil level is within spec, so it ins't that. I didn't move the car for two days, which is the only factor which I never duplicate, I generally drive the car once a day back and forth from work so it could be that I have a bad seal...it doens't show up after one day but after two it leaked enough...I'll leave the car parked for the next couple of days and then start it again...but regardless, it is going to the dealer.
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From: Windy City
2004 C230W
Blue Smoke
My friend had a Toyota Cressida and once in a blue moon (or more like once a year), when the temperature and the humidity (and also when all the stars are in line) the car would foul it's plugs. I heard that it had to do with the cpu and the start up program that would get the car to behave this way. After letting the engine crank over about 5 seconds longer than usual, the car would start and ofcourse blow a puff of grey smoke out the exhaust (not blue smoke).
Jun
Jun
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Super Member
Joined: Jan 2002
Posts: 875
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From: Los Angeles
2002 c230k
Re: Blue Smoke
Originally posted by Junbug
My friend had a Toyota Cressida and once in a blue moon (or more like once a year), when the temperature and the humidity (and also when all the stars are in line) the car would foul it's plugs. I heard that it had to do with the cpu and the start up program that would get the car to behave this way. After letting the engine crank over about 5 seconds longer than usual, the car would start and ofcourse blow a puff of grey smoke out the exhaust (not blue smoke).
Jun
My friend had a Toyota Cressida and once in a blue moon (or more like once a year), when the temperature and the humidity (and also when all the stars are in line) the car would foul it's plugs. I heard that it had to do with the cpu and the start up program that would get the car to behave this way. After letting the engine crank over about 5 seconds longer than usual, the car would start and ofcourse blow a puff of grey smoke out the exhaust (not blue smoke).
Jun
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From: Ashburn, VA
'19 GLC 300, '19 TM3SR+
Originally posted by Jens C320
Well, the oil level is within spec, so it ins't that. I didn't move the car for two days, which is the only factor which I never duplicate, I generally drive the car once a day back and forth from work so it could be that I have a bad seal...it doens't show up after one day but after two it leaked enough...I'll leave the car parked for the next couple of days and then start it again...but regardless, it is going to the dealer.
Well, the oil level is within spec, so it ins't that. I didn't move the car for two days, which is the only factor which I never duplicate, I generally drive the car once a day back and forth from work so it could be that I have a bad seal...it doens't show up after one day but after two it leaked enough...I'll leave the car parked for the next couple of days and then start it again...but regardless, it is going to the dealer.
