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4u2nv
Date registered: Dec 1899
Location:
Vehicle(s):
| Deadly known exhaust leak problem/smell inside cabin
Here is a thread for people looking to track a pesky exhaust smell inside the vehicle. While this is only one of many dangerous exhaust leaks its extra lethal as it can catch the vehicle on fire!
What we are looking at here is the exhaust crossover (Traverse Tube) pipe found on most all V8 Mercedes from 1986-1991. You don’t see this problem much with the older v8's as there was no cat. converters to deal with and most of the manifolds were dual outlet. With the introduction of the cat. converter in 1986 the v8's got a crossover tube (Shown) to direct the drivers side bank into the collector with the primary converter.
Basically if you hear an exhaust leak and smell exhaust fumes in your cabin have a look here. It’s on the back side of the motor. Should anyone be looking for one go to the website on the photo.
Take a close look and you will see the climate control system vents in this same area! This vent/drain is for condensation run off from the air conditioning however exhaust gases can get sucked into your climate box very easy if the drain/vent is older and there is a gap in the seal! If you smell exhaust gases thru the vents you will want to check ALL of the exhaust connections around there such as the collector flanges, manifold gaskets, seams of the primary converter and this crossover tube.
 (w126exhaustleak.jpg)
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 w126exhaustleak.jpg (65KB - 1 downloads)
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Nutz
Expert
Date registered: Apr 2006
Location:
Vehicle(s):
Posts: 2026
| Re: Deadly known exhaust leak problem/smell inside cabin
Great info 4u2nv.I knew you had it in you! |
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BenzDieselTuner
Date registered: Dec 1899
Location:
Vehicle(s):
| Re: Deadly known exhaust leak problem/smell inside cabin
does the 123 also have such drains underneath the center console? would this be my untraceable leak where water gets in? |
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