[DML] Re: Missing idle mixture screw?

["vin4258" <vin4258@xxxxxxxxxxxx>]

Unfortunately, Utah does not exempt from emissions testing vehicles 
built after 1967 (why would they when they can get their $25 per 
vehicle emissions test fee).  Any thoughts on the original problem?  
The car seems to run just fine at all RPMs and starts right up every 
time.  Also, the area where the screw seems to be missing has a 
raised ring area, where an adjustment screw would seem to fit, but 
instead of a screw is a deep hole...


--- In dmcnews@xxxxxxxxxxxxxxx, "Bernie" <bmanderville@xxxx> wrote:
>
> You might want to look into getting historic or antique 
registration 
> for your car. I don't know what state you live in but as of 
January 
> 1st, 2006 an '81 car is considered in every state to be an 
antique.  
> With that status, unless your car is a daily driver, you probably 
> won't need an emissions test.
> 
> 
> Bernie
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, "vin4258" <vin4258@xxxx> wrote:
> >
> > Vin 4258 failed emissions a few weeks ago and after doing a tune 
> up 
> > (plugs, wires, cap, rotor, air filter, oil) it failed again 
today 
> with 
> > only minimil improvement.  Emissions tester says he thinks the 
O2 
> > sensor is ok because emission levels pass at high RPM (the 
> > sensor 'kicks in' at a higher RPM but does not affect idle 
> mixture?)  
> > Next option is to adust the idle mixture screw, but when I go 
> looking 
> > for it, it seems to be missing.  All I see is a hole with no 
> apparent 
> > end but I do see threads.  What is this and can I simply put in 
a 
> > replacement screw or does this need major work?  I have never 
> messed 
> > with it and the car only has 7k miles on it and this is the 
first 
> > emissions testing I have been required to get since I bought 
it...
> > 
> > thanks,
> > 
> > CRG
> >
>








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