Sniffer pipe. Was: quattro digest, Vol 1 #2670 - 18 msgs

[cobram at juno.com]

RonPellerin at aol.com writes:

> I have a 91 100 and when I bought the car I heard an exhaust leak.
> When I took it to the muffler shop we saw an open nipple on the drivers

> side with exhaust leaking out. They plugged it, because we could not
see

Sounds like the CO probe pipe, commonly called the "sniffer" pipe.  I
brazed a ball bearing in the pipe to seal it when it rusted out on the
5KS.  Useless appendage,  I believe it's placed there for random emission
sampling or fine tuning when the cars were new.  Could have some useful
function, but I've never come across a use for it.

BCNU,
Cobram at Juno.Com
http://www.geocities.com/cobramsri/index.html
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