[W126 Coupe] where is that smell coming from?

[drakon]

I had this problem, turned out the screws connecting the downpipes to the
headers were loose.  Also check the exhaust manifold to engine block
gaskets.  You may need to rev the engine a little to notice the leak, which
is why you don't smell it when the car is stopped.

Eddie

-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of Rico2005
Sent: Thursday, January 27, 2005 11:01 AM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe] where is that smell coming from?

(Please cc me on replies as I am not receiving list updates)

Hi, I've been driving a bit on my Euro 560SEC (it has been raining here
lately, and I don't usually drive it in rain), and have noticed an odd
smell that occasionally permeates through the passenger cabin. I say "odd"
since I can't quite pinpoint the smell. I have replaced my EHA valve and
seals recently, as well as my gas cap. But honestly, it isn't a "pure gas"
smell. Strangely enough, it smells more like propane than anything else.
And no, it wasn't when I was following a propane-powered vehicle.

I asked my mechanic about it, and he wasn't sure either. He suggested
changing my fuel to see if that had any effect (I use Chevron 92 octane).
But my windows and such seal pretty well, so I can't imagine it being the 
exhaust coming back in. So I'm a little perplexed. Appreciate any thoughts.

Rich
'87 Euro 560SEC
http://qube.myvnc.com/mercedes/560SEC/page4.html



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