[DML] Re: Not passing emissions
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[DML] Re: Not passing emissions

Make sure the timing is set right, and the vacuum advance is hooked up
correctly and working. On the Island setup there is no mechanical
advance. Check for vacuum leaks. You may have to adjust the mixture
but do not do it to compensate for vacuum leaks. They have to be fixed
first. Pull the output pipes from the turbos to the intake manifold
and if the insides are oily you have to have the leaky turbo rebuilt.
You may need to replace the silicone hoses and clamps on the Island
turbo plumbing. They MUST not leak. Check the control hoses too. Any
leaks will allow you to overboost. Pull the oil fill and you should
not see any pressure coming out. You can hold a piece of paper over
the opening to determine if air is coming out of the crankcase. You
should be running synthetic oil on a turbo car.
David Teitelbaum
vin 10757

--- In dmcnews@xxxxxxxxxxxxxxx, "M. P. Olans" <mpolans@...> wrote:
> OK,
>      This is frustrating.  Two years ago I had to do a full tune-up to
> pass emissions.  This year, same thing.  However, even after the
> tuneup, my CO is still too high.  NOx and HC's are really low so I
> know the O2 sensor and cats are doing their job.  However, I am at a
> loss here.  I did plugs, wires, cap, and rotor.  Gapped them to .025
> since the manual said .024-.028 IIRC.  Car runs great and has power
> just like before.  It is an Island Twin Turbo.  So, any hints?  I'm
> running about 25g/mile CO and the limit is 20.  When I got it from Rob
> it tested at 11 g/mile, and then after the first tune-up it was also
> 11 g/mile.  What am I missing?  I cleaned my K&N air filter last
> month.  I haven't changed my fuel filter in probably 4 years, but how
> could that affect emissions?
> What am I missing?
> Thanks,
> Matt
> The Arizona DeLorean Club
> www.az-d.org

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