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#1
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A/C Air Smelling Burned Diesel
My 2009 E-320 Diesel when stopped on traffic light with air conditioning running in ventilation only (only air from outside) the incoming air come with a smell of burned diesel. Even with no cars stopped in front of my car the incoming air will have the same smell. When driving I don't have this problem, certainly because the car is in movement, I don't have this problem.
Should I use a carbon activated filter? Is this issue from somewhere in the car? As I bought this car not long ago I don't know what kind of filter this car have installed. Anyway your suggestion will be appreciated.
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Nyck - TX - USA |
#2
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I wouldn't expect you to be able to smell the exhaust with the HVAC in fresh-air mode unless you were positioned in such a way that the wind was blowing the exhaust back up under the car while you sat motionless.
It's possible that you have an exhaust leak somewhere up front and what you're smelling is the exhaust fumes that aren't making it to the tailpipe.
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Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#3
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Does yours have a plastic pipe across the top of the air cleaner which carries exhaust? In my 300SD I smell exhaust at a stop and know that that pipe has slipped out of the rubber connector. Of course mine is a 1981 so I have no idea how MB might changed things.
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#4
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Quote:
Anyway your reply was very good. Thanks
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Nyck - TX - USA |
#5
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I had a similar issue on my 1982 300 SD but it was from a breadth rubber hose leaking around the engine air filter and this smell was sucked by the A/C blower.
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Nyck - TX - USA |
#6
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Check all the bolted exhaust connections near the firewall. I've seen this happen several times.........
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#7
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Does the carbon activated air filter help to eliminate outside odor (fumes from traffic, and others) to get into the cabin ?
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Nyck - TX - USA |
#8
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You shouldn't be smelling exhaust in the car. You should find and fix the problem first.
Carbon filters can help resist the "musty" smell that some A/C's develop over time, but don't count on it to filter out odors from outside air. There's not enough carbon in the filter to absorb anything meaningful from the quantity of air moved by the fan. You can also expect a reduction in airflow since the filter is already technically partially "clogged" with the carbon dust. If you choose to run one of these types of filters, change them every 6 months if you use the outside air option frequently.
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#9
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do you mean fresh evaporating diesel smell, or exhaust gas smell that is way potent?
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With god all things are possible -Mark 10:27 |
#10
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Quote:
When I stop on traffic lights with my A/C system running in ventilation only I get this typical smell inside the cabin. It is not as a smell of exhaust system but as a smell of heated lube oil. I had no chance yet to verify what is around the A/C air filter. Was my explanation enough? When I asked about the carbon filter I do not mean that I want the filter to solve that problem but to learn better about the carbon activated filters. Thanks
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Nyck - TX - USA |
#11
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__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#12
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Quote:
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Nyck - TX - USA |
#13
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It is well worth your time to check for oil leaks. The OM642 engine is known to form leaks at the oil cooler and various other places. If you have a leak starting up, that would certainly explain the smell of cooked oil in the cabin. If you do find an oil leak, you may want to start a new thread for better help tracking it down and finding out how to resolve it.
__________________
Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
#14
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Also I found feel drops of oil on the floor from the passenger side of this car. Can this drops come from intercooler?
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Nyck - TX - USA |
#15
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In my opinion it's not from the intercooler,
Give it a a really good look around like previous post, but on a cold block and then again on a hot block. Look for darker spots or "follow your nose"
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With god all things are possible -Mark 10:27 |
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