Emissions checks are not required in all area's of the state. The following postal codes require emissions with vehicle registrations:
Clark County:
98604 Except North of NE 279th St.
98606 and 98607
98629 Except East of NE 50th Avenue
98642
98660 through 98668
98671 Except Skamania County
98682 through 98687
King County:
98001 through 98009
98011 and 98012
98015
98020 and 98021
98023
98025 through 98043
98046 and 98047
98052 through 98059
98062 through 98064
98071 through 98075
98077
98082 and 98083
98089
98092 and 98093
98101 through 98199 Except 98110
Snohomish County:
98011 and 98012
98020 and 98021
98026
98028
98036 and 98037
98041
98043
98046
98072
98077
98082
98087
98201 through 98208
98213
98258
98270 and 98271
98275
98290 and 98291
98296
Spokane County:
99001
99005
99014
99016
99019
99021
99025
99027
99037
99201 through 99299
Pierce County:
98327
98332
98335
98338
98344
98352
98354
98371 through 98375
98387 and 98388
98390 and 98391
98401 through 98499
Vehicles between 24 and 5 years old need to be tested. Testing is done every 3rd registration based on the year of the vehicle.
For Example in 2010 the tested vehicles are:
For license expirations in 2010, even model year vehicles 1986 through 1994 and odd model year vehicles 1997 through 2005 need to test before licensing.
Emission testing includes:
* 1996 and newer gasoline vehicles under 8501 pounds Gross Vehicle Weight Rating (GVWR)
These vehicles will receive an on-board diagnostic (OBD) test where the testing station's computer will easily and safely connect to your vehicle's computer to receive either passing or failing (trouble code) information on your vehicle.
* 1995 and older gasoline vehicles under 8501 pounds Gross Vehicle Weight Rating (GVWR) with two-wheel or part-time four wheel drive
These vehicles will receive an Acceleration Simulation Mode (ASM) test. These vehicles are tested on a dynamometer. All front wheel drive vehicles will be operated by inspection personnel. Motorists may operate rear wheel drive vehicles on the dynamometer. These vehicles also receive a gas cap test to verify that the gas cap seal is functional.
* Gasoline vehicles over 8500 pounds Gross Vehicle Weight Rating (GVWR) or any 1995 and older vehicle with constant 4x4 (all wheel drive) or traction control
These vehicles will receive a two-speed idle test. The vehicle will not be driven on a dynamometer. The motorist will be instructed to reach required RPM levels while the vehicle idles in park or neutral (depending on the transmission or model-year type of vehicle). These vehicles also receive a gas cap test to verify that the gas cap seal is functional.
* Diesel vehicles under 8501 pounds Gross Vehicle Weight Rating (GVWR) with two-wheel or part-time four wheel drive
These vehicles will receive an opacity test that measures the density (opacity) of exhaust as it exits the vehicle's tailpipe. The vehicle is tested on a dynamometer. All front wheel drive vehicles will be operated by inspection personnel. Motorists may operate rear wheel drive vehicles on the dynamometer.
* Diesel vehicles under 8501 pounds Gross Vehicle Weight Rating (GVWR) with constant 4x4 (all wheel drive) or traction control
These vehicles will receive an opacity test that measures the density (opacity) of exhaust as it exits the vehicle's tailpipe. The vehicle will not be driven on a dynamometer. The motorist will be instructed to reach required RPM levels while the vehicle idles in park or neutral (depending on the transmission or model-year type of vehicle).
* Diesel vehicles over 8500 pounds Gross Vehicle Weight Rating (GVWR)
These vehicles will receive a snap acceleration test. The vehicle exhaust's density (opacity) will be measured as it exits the vehicle's tailpipe. The vehicle will not be driven on a dynamometer. The motorist will be instructed to press down on the accelerator and immediately release it while the vehicle idles in park or neutral (depending on the transmission or model-year type of vehicle).
Topic: WA emission requirements (Read 1926 times)