Would a vacuum leak affect the NOx reading? If so, I would have a
good look and listen to all hoses and the boot. I have no idea if a
leak would affect the readings, but if so, check the connections and
hoses out.
Ken
On Sep 5, 2005, at 7:13 PM, Otis Keith wrote:
> Brad,
> If you cannot find the problem and need it to pass, try adding
> about two to three pints of alcohol to about 1/4 tank of gas. Drive
> around about 5 min before the next test and that should do it. This
> is not a cure, just a slick way to pass the test until you can resolve
> the issue.
> Otis
> St. Louis, Mo.
> 86 505 sti
> 86 505 Turbo SW
> 85 505 SW
> 81 505 TD
> 81 504 Diesel SW
>
> tilac1 <tilac1@yahoo.com> wrote:
> My '87 XN6 505 wagon just failed the dyno/cruise portion of the
> emmisions inpection here in MA. Maybe some other owners can give
> suggestions on what to do. The HC and CO are within spec but the NOx
> is 4.13, the limit is 3.00.
>
> Car runs super, cat converter is a year old, O2 sensor is new as are
> plugs, cap and wires. Ignition timing is to spec also.
>
> Besides changing the oil, getting out on the highway, and adding some
> Techron, what else can I do before going back for a retest in hopes of
> passing?
>
> PS I don't want to monkey with the mixture.
>
> Thanks,
>
> Brad in MA
> '87 Liberte 200K miles
>
> [Non-text portions of this message have been removed]
>
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Received on Mon Sep 5 21:04:03 2005
