Dennis
Actually the hydrocarbons were very high at the Idle test (1025) but below the maximum allowable for the driving test (73.00)... As for the CO, it passed at 0.82 and .078 at both tests (driving and idling ) and so it was for the NOx at both tests, that is ...well below what is allowed. So all together, everything was ok except the hydrocarbons at the idle test...Does it help? 
Alain
Westy 1986

Sent from my iPad 2

> On 2014-03-02, at 19:28, Dennis Haynes <d23haynes57@hotmail.com> wrote:
> 
> I can be much more helpful if you include the CO emissions and if a dyno
> test the NOx emissions. 
> 
> Dennis
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Alain Thibault
> Sent: Sunday, March 2, 2014 10:04 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Fail air are
> 
> My Westy failed aircare...hydrocarbons being too high. The O2sensor is new
> and the van is running just fine. Any idea what might be the culprit? 
> Thanks
> Alain
> 
> Sent from my iPad 2
>