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Old 10-08-2013, 06:54 PM
daveIT daveIT is offline
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Join Date: May 2011
Location: Colorado Springs
Posts: 118
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http://www.dmv.org/co-colorado/smog-check.php

I/M 240 Emissions Test
The I/M 240 emissions inspection tests the carbon monoxide, hydrocarbons, and nitrogen being emitted from the vehicle over a period of four minutes.

The inspector does a visual inspection of emissions equipment.
The vehicle is tested under simulated driving conditions using a dynamometer (similar to a treadmill) to allow the wheels to spin and a large fan to simulate wind while measuring emissions from the tailpipe.
A gas cap seal test is performed after the simulated driving test is complete.
You will be given a vehicle inspection report with details about how the vehicle performed and whether it passed or failed.

Two-Speed Idle Test
The two-speed idle emissions inspection tests the carbon monoxide and hydrocarbons being emitted from the vehicle.

A probe in the tailpipe is used to measure emission pollutants.
The inspector lets the engine run at idle speeds for 30 seconds and readings are taken.
The engine is then sped up to 2500 RPM for 30 seconds and readings are taken.
The engine returns to idle speed for another 30 seconds and readings are taken.
You will be given a vehicle inspection report with details about how the vehicle performed and whether it passed or failed.

Diesel Opacity Test
Vehicles that run on diesel fuel will be given a diesel opacity test.

An opacity meter is used to measure how much the air pollutant obscures sight through the exhaust smoke.
You will be given a vehicle inspection report with details about how the vehicle performed and whether it passed or failed.

Dynamometer Test
All-wheel drive/traction control vehicles must be inspected using a dynamometer that examines the amount of force or torque the vehicle produces. The dynamometer will spin both front and rear wheels together. Each Air Care Colorado station has at least one of these dynamometers.


If you have an Obama phone, maybe you can qualify for this...

Economic Hardship Waiver

You may qualify for an economic hardship waiver if you are getting financial aid from an approved program, and your failed vehicle is your only method of transportation. There are no minimum repairs required to qualify.

If you believe you qualify for the hardship waiver, call the Colorado DMV at (303) 205-5603.
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Last edited by daveIT; 10-08-2013 at 08:52 PM.
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