[DML] Re: Emissions

["seanhagan" <seanhagan@xxxxxxxxx>]

You may want to be sure that you have a catalytic converter on the 
car. 


--- In dmcnews@xxxxxxxxxxxxxxx, "vin4258" <vin4258@xxxx> wrote:
>
> Wonderful news in that vin 4258 failed its emissions idle test.  
> Readings at 686 RPM were 289 for HC and 4.25 for CO% when 220 and 
1.2 
> are legal limits respectively.  I have read through my tech 
service 
> manual and it says that I don't want to adjust the idle mixture 
screws 
> since they are factory set and don't need subsequent adjustment.  
So, 
> where should I start- is this easy as an air filter change (it 
> probably needs one) or is it the cold start valve or thermotime 
> switch, or a new direction completely.  BTW the same readings were 
72 
> HC and .8 CO% at the high speed test (2378 RPM) which passed.
> 
> Any thoughts?
>









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