Re: Failed emissions!!!

["Adam 16683" <acprice1@xxxx>]

I just did a full ignition tune-up about 6 months ago, all stock 
parts except for the plugs which I used bosch platinum+4. The 
catalytic converter was replaced by the previous owner in 1999. The 
air filter appears to be clean. 

Adam


--- In dmcnews@xxxxxxxxxxxxxxx, "David Teitelbaum" <jtrealty@xxxx> 
wrote:
> You can't always make a car pass emissions testing by making
> adjustments. Sometimes you have to replace worn parts. How old are 
the
> spark plugs and wires? Worn plugs and bad wires will cause high HC. 
A
> bad catalytic converter can also do it. If the timming is off it can
> do it. Just getting the Lambda to work isn't always going to get you
> what you need. Even a dirty air filter can keep your HC up. You will
> hear a louder whine from the alternator as it makes more electric 
when
> the cooling fans kick in. You are figureing out you never get
> something for nothing, as you improve one emission you just balance 
it
> off to another. CO is hard to control, HC is the easiest, NOx is
> largely affected by the combustion chamber temperatures and pressure
> so you can't change it all that much but it does go up as the HC 
goes
> down, you are burning more HC so the combustion chamber temps and
> pressure go up causing the NOx to increase.
> David Teitelbaum
> vin 10757
> 
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, "Adam 16683" <acprice1@xxxx> wrote:
> > My car is still failing emissions! However it is definately 
better 
> > than before. CO is in control, and HC failed by 0.2!! I dialed in 
the 
> > CO as best as I can get it with my dwell meter, its hovering 
right at 
> > 30, oscillating between 28~32. With my CO dialed in my car idles 
> > rougher, and is even worse during warm-up, which is why I 
enrichened 
> >