[DML] Re: I failed inspection!
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[DML] Re: I failed inspection!



My D also failed the emissions inspection for several years in a row (high
HC). A local Volvo specialist tweaked as best he could, including new
plugs, air filter and his instruments showed acceptable levels of HC. But
Maryland vehicle emissions inspection still failed it.
But this year it finally passed! Tried a bottle of "guaranteed to pass"
stuff from local auto store mixed with AMOCO premium, drive it for 250
miles, and combined with a 40 minute wait in line idling on a 98 degree day
(engine was HOT!), it passed ! Reading was 218, failure was 220.
Good luck on yours!
Jim

Marc A Levy wrote:

> I was sure I would find a answer to this in the back issues, but no
> luck.
>
> I went through inspection yesterday, and failed. The guy that put the
> red sticker on my car said "The HC was a bit high".
>
> I would prefer not to mess with the mixture because this car is
> Turbocharged (Island Twin). If its not broke, don't fix it.
>
> I have passed inspection with this setup for the past few years, since
> PJGrady replaced the O2 sensor, and a few other items that were removed
> when the turbos were installed.
>
> I recently replaced the air filter (if you read my post of a week ago,
> it became oil drenched when oil was sucked in through the PVC).
>
> So, Is there a quick fix to get it to pass? If I disconnect the PVC
> hose? disconnect the idle switch? Remove air filter? Maybe some fuel
> additive?
>
> This weekend is the Fall event for De Lorean Mid Atlantic, and I would
> be embarrassed to show up with a big red sticker :)
>
> Thanks,
> Marc
>
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