[s-cars] Stinkin' along

[Igor Kessel]

djdawson2 at aol.com wrote:
> Try plugging your exhaust at the tips with shop towels while the car is 
> idling.  Quite a bit of pressure will build, allowing you to check 
> around for leaks.  This has worked well for me.
> HTH,
> Dave 
>  
> -----Original Message-----
> From: Igor Kessel <KBATPO at comcast.net>
> To: Audi S-list <s-car-list at audifans.com>
> Sent: Sun, 21 May 2006 17:26:25 -0400
> Subject: [s-cars] Stinkin' along
> 
> Folks,
> my pearl Ms. Piggy has developed a stink. On cold acceleration it smells 
> like exhaust. On hot acceleration it smells like aromatic hydrocarbons. 
> In order to rule out my imagination aided by the exceptionally keen 
> sense of smell I asked Stefan to drive it the other day and he confirmed 
> my observations.
> 
> We are speculating that it must come from the exhaust tract somewhere 
> between the head and the central resonator, otherwise the stench 
> wouldn't have made it into the cabin through the open windows and/or 
> HVAC. Does anyone have any pointers that will help me narroow down the 
> search? Is there any way to test the exhaust sys similar to the one with 
> the "toilet clean out with a tyre nipple" gizmo for the intake?
> 
> -- 
> Igor Kessel
> two turbo quattros

Folks,
I am about to start testing Ms.Stinky for leaks in the exhaust tract. I 
intend to disconnect the MAF hose in the front and plug it with the 
"toilet cleanout Audi special tool" ™ as well as both tailpipes in the 
back. I will be supplying the air pressure through a tyre valve in one 
of the rubber cork stoppers in one of the tailpipes (thank you Uncle 
Bob, for the idea!). Now... I vaguely recall that I am supposed to 
disconnect the 19mm crankcase ventilation hose at the front of the head 
and plug the whole.

1. is this correct?
2. why do I have to do this?
3. which hole? The one in the hose or in the nipple in the head?


-- 
Igor Kessel
two turbo quattros