Forhan, Thomas wrote:
>
> Whoops!
>
> My 83 9pax sunroof didn't make it! Properly warmed up, at idle it has CO of
> 2.21 pct vice the standard of 1.2 pct, and Hydrocarbons of 276 PPM, vice the
> standard of 220 PPM.
>
> The engine had rings, valves and a head gasket job 15000 miles ago, and
> fresh oil and tune up, when installed 2000 miles ago. Compression is good,
> it doesn't burn any oil, and it runs just fine.
>
> I've got two months to get things in order. If I spend $150 or more (cat and
> o2 sensor) the state will give me a waiver, but I'd rather find out what the
> real problem is. Where to start? Ideas?
>
Its quite likely the machine which measured the emissions is inaccurate.
I get my emissions checked every year here in NY and the readings vary
widely from year to year and I do nothing to the vehicle (not required
here yet).