Nice points. Especially the 2500 rpm thing. Soundslike a burocratic
decision; "test it at idle and at running speed" - with no thought to
the loading.
Remember also that a nicely tuned engine is not the lowest polluter. In
fact many of the things that I remember from years ago about tuning an
engine are in direct opposition to what one hears now to reduce
pollution.
John
>
>Since the engine is not loaded at the 2500 RPM test, it is the Idle
jets
>that need to be reduced in order to pass. The idle jets function up
to
>1/8 throttle through the progression system. Reduce the size of
these,
>and then reset the idle mixture adjustment screws before retest.
>
>
>Here are some tips that really work for any car.
>
>1) Never let the technician connect YOUR car to the machine, and begin
>the testing without first running the machine in monitor mode.
>This keeps you anonomous with respect to the state, and lets you know
>what you are in for before they press the REAL button.
>This is generally not in the best interest of the garage, because if
the
>vehicle fails
>in monitor mode, they generally DONT get paid. Assure the mechanic
that
>you will pay the testing fee regardless of the pre-test outcome.
>
>2) Retard you base timing by 2 degrees. This reduces the CO
emmisions.
>Never run your distributor advanced for a test.
>
>3) If your car runs rich, go to the auto parts store, and buy a bottle
>of
>"Smog test" additive. These additives contain mostly Isopropyl
alcohol,
>which brings along some extra oxigen. The AF ratio for buring
IsoPropyl
>is about 7/1 as compared to 14.65 /1 with gasoline. This means that
>running IsoPropyl in you car with standard jetting will result in a
>leaner
>burn. It also means that you will be making a ton of CO2, but guess
>what?
>They dont test for CO2!
>
>4) Be sure the oil has just been changed. Oil absorbs the volitile
>fallout
>from the engines blowby. Smell your oil the next time you change it.
>Its
>loaded with HC's, that get into the intake through the PCV valve.
>
>
>
>Hope this helps, and good luck.
>
>Jarrid Gross
>
This archive was generated by hypermail 2b30 : Tue Sep 05 2000 - 09:49:51 CDT