Calle Fallberg wrote:
> You�ve already got loads of good advice here, what I want to add is that if
> it�s recently smoke tested and the O2 sensor is tight, try to get the cat
> off and shake all the loose stuff out !
> You might even take a tireiron, a long screwdriver or something similar and
> help the ceramic out of there !
> Not too good on the environment but it keeps the Bus rolling without
> clogging the muffler and you could save up the cash or find the best deal on
> a new one  to replace it with before the next test....
>
> Calle
> -88 Volgon
> Mullhyttan, Sweden
>

The cat on my '80 did this and I used the tire iron extraction method.
It still passed emission testing just fine afterward.

Larry A.