Why does white smoke like come out of the front vents when usinmg the air condition in the mercedes benzs 190?

Harvey N Tawatao

• 3854 Answers
• Posted on Apr 08, 2009

SOURCE: Exhaust smoke white

You could have a head gasket problem, Check your oil level and see if it's high and also check it for antifreeze. If there is antifreeze miked with your oil it would seam mikly and check your antifreeze level too if it's gone down. Good luck and keep in mind that antifreeze is corrosive the internal bearing in your engine.

SOURCE: Air Conditioning on 2001 Mercedes-Benz CLK

You could remove fuse 25 (30amp) in the underhood fuse panel, but then no blower for AC, heat, or defrost. Need to replace blower regulator.

SOURCE: vents blowing hot air while driving

hello I'm an M.B. tech, sorry I thought I sent this yesterday but it is not in my solution box. If your vehicle is actually blowing hot air and not just ambient ait through the vents the only reason this could be is that coolant is entering the heater core all the time. Mercedes had 2 ways of doing this from that era. The earlier version had a vacuum water valve against the rear firewall. The other version had an electric valve called a mono valve by the battery tray. I would think it would be very likley to knock of a vacuum line doing an oil change but most likley you would have other problems as well. The water valve had a red vac, line going to it. Your vehicle probably has the electrical valve which is ublikley to get damaged during an oil change. most likley the diaphram is ruptured. There are 4 slooted screws on top of the valve. If you remove those screws you will gain access to the insert(plunger for solonoid). Take the rubber seal and stretch it out. Take a close look for tiny tear in seal. It is a very common problem with the monovalve type system. You can replace just the insert and it saves alot of money as compared to the price of the monovalve. hope this is helpful.

SOURCE: 1994 c280 mercedes benz a/c

center console unit has a vaccum leak.
do you hear the vaccum pump in the trunk cycling over and over?
take it to benz for service very very difficult to fix.

SOURCE: white smoke mercedes benz 2008 gl-class 320

Seek out another mechanic. White smoke from the exhaust is a symptom of coolant entering the combustion chamber. Most of the time this is caused by a blown head gasket. A loss of coolant with no apparent leak, a white foamy substance on the underside of the oil fill cap, oil level overfull, and air bubbles escaping from the radiator are other symptoms of a blown gasket or cracked head. Stop driving this vehicle until you have this diagnosed and repaired. A compression test will verify this. Serious engine damage will occur if you indeed have an internal leak so make sure one way or the other.