white smoke anti freeze odor - Mercedes-Benz Forum
 
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post #1 of 7 (permalink) Old 01-19-2017, 05:58 PM Thread Starter
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white smoke anti freeze odor

white smoke from tailpipe antifreeze odor in cab, mercedez c230 2007, what are possible causes?
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post #2 of 7 (permalink) Old 01-19-2017, 07:32 PM
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cracked head, cracked block, blown head gasket, not necessarily in that order.

Probably a million threads here on the topic, search any one of the issues above.

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post #3 of 7 (permalink) Old 01-19-2017, 08:09 PM Thread Starter
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thanks

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white smoke from tailpipe antifreeze odor in cab, mercedez c230 2007, what are possible causes?
Thanks I thought as much just wanted some confirmation.
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post #4 of 7 (permalink) Old 01-19-2017, 08:45 PM
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Have you noticed if your coolant level constantly goes down? If it does, the most likely culprit is a bad head gasket or a cracked head. Your vehicle's exhaust system can provide you with several indications of a blown head gasket. Water leaking from your car's exhaust pipe is a straight forward sign of a blown gasket. That distinct coolant smell emanating from your vehicle's exhaust or if you notice white smoke coming out of your car's tailpipe -- you are most likely dealing with this problem.

White smoke on a healthy engine simply means condensation trapped in the exhaust system. Sorry to say, you can pretty much rule that out because of the coolant odor inside the cab.
Another easy sign of a blown head gasket is contaminated oil, which is a direct result of a head gasket that has sprung a leak. To check on this problem, inspect your car's oil cap. If you see milky oil under the cap, your oil has been contaminated. Your coolant has mixed with your oil. This will eventually exhibit compression loss & overheating leading to a catastrophic engine failure.


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post #5 of 7 (permalink) Old 01-19-2017, 09:11 PM
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Forgot to mention, there's quite a number of "engine block sealer" on the market - metallic, ceramic, copper, epoxy-based etc. They simply do not work. I will not waste my time & money on them. If you're away from home, it can provide a temporary solution just to get back home, but never a fix. Stay away from them & fix it right. It can lead to more costly repairs, serious issues like a blown water pump, etc
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post #6 of 7 (permalink) Old 01-20-2017, 06:14 PM
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With white smoke from the exhaust, we first hope its just a bad membrane in the transmission modulator with the vacuum sucking fluid (located on side of tranny).
That's a fairly cheap fix and not difficult DIY. But it won't smell like coolant / water.

Another time I had enough white smoke smelling of coolant to literally make a main crossing disappear in fog.
The cause turned out to be the small aux pump located in the space between the 2 fire walls of the engine compartment and car interior (W126).
The small aux pump on drivers side near the mono valve might be one of the most neglected items on our cars.
They tend to rot out, and coolant will drip on the manifold.
Again, a fairly inexpensive fix.

Should the head gasket be the culprit, once the heads are finally off, you'll likely be confronted with additional work needed like timing chain, tensioner, chain guides, valve guides, or a head rebuild, = thousands of $.

In that case I would probably look for a good used engine from a wrecking yard.
Wrecking yard mechanics are pretty experienced, they'll look under the valve covers, at the oil, how the engine cold turns (1 1/16 or 27mm socket, right turn only) to make guesstimates re an engines condition.
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post #7 of 7 (permalink) Old 05-09-2019, 01:10 PM
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Did you ever fix?
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