In article
ich.edu>,
"Daniel J. Stern" > wrote:

> On Sat, 28 May 2005, aarcuda69062 wrote:
>
> > > HC: 504ppm (limit 300ppm) FAIL
> > > CO: 6.76% (limit 1.5%) FAIL
> > > NO: N/A
> > >
> > > Still looks like lean misfire under load, possibly inoperative or clogged
> > > EGR system, possibly dead catalytic converter(s), possibly inoperative
> > > Oxygen sensor, possibly malfunctioning carburetor, possibly malfunctioning
> > > Lean Burn computer...
> >
> > Lean misfire with 6.7% CO and attendant 504 ppm HC?
>
> Lean misfire *under load*. The 6.7% CO and 504ppm HC are idle readings.

True enough... your text reply followed the idle reading though.