How do states use OBD II for emission inspections?

Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission test.
See also:
Checking tire pressure
Cold tires
Inflation pressure should be checked when the tires are cold.
The tires are considered to be cold when they have the same temperature as the
surrounding (ambient) air.
This temperature ...
Windshield wiper blades
To change a windshield wiper blade:
1. Fold the wiper arm out from the windshield
and hold the wiper blade.
2. Press in the grooved catches and pull out
the wiper blade.
3. Insert a new wiper ...
Washer fluid reservoir
Washer fluid reservoir
The washer fluid reservoir is located in the
engine compartment and holds approx.
6.8 US qts (6.5 liters).
When there is less than approximately 1 US qt
(1 liter) rem ...
