Rear Crank Seal

[quk@sievers.com (Phil Payne)]

In message <"<807F363281552D79>807F363281552D79@wtn2.bbc"@-SMF-> "Heneghan,Paul" writes:

> From: quk@sievers.com (Phil Payne)
> 
> >You'll _never_ get the fuel 
> >injection right if the rear seal is leaking heavily.
> 
> Why?

Because air entering the engine via the breather system is not accounted for by 
the air mass sensor.  If air is getting into the engine in significant volumes 
_anywhere_ (on some cars, a bad dipstick seal is enough) the idle adjustment 
will be incorrect or even impossible.

If you set a CO value and blip the throttle (TAKE THE TOOL OUT FIRST!) you'll 
see it settle back to a different CO value.

--
 Phil Payne
 phil@sievers.com
 Committee Member, UK Audi [ur-]quattro Owners Club