State Emission Standards - Gas: ILLINOIS
ILLINOIS EMISSION STANDARDS - IM240 TEST
| Application |
HC gpm |
CO gpm |
| Light Duty Vehicles (6000 GVWR Or Less) |
| 1981-82 |
2.00 |
60.0 |
| 1983-87 |
2.00 |
30.0 |
| 1988-95 |
0.80 |
15.0 |
| 1996 & Newer |
0.60 |
10.0 |
| Light Duty Trucks (6000 GVWR Or Less) |
| 1981-83 |
7.50 |
100.0 |
| 1984-87 |
3.20 |
80.0 |
| 1988-95 |
1.60 |
40.0 |
| 1996 & Newer (3750 LVW Or More) |
0.80 |
13.0 |
| 1996 & Newer (3750 LVW Or Less) |
0.60 |
10.0 |
| Light Duty Trucks (6001-6500 GVWR) |
| 1981-83 |
7.50 |
100.0 |
| 1984-87 |
3.20 |
80.0 |
| 1988-95 |
1.60 |
40.0 |
| 1996 & Newer (5750 ALVW Or More) |
0.80 |
15.0 |
| 1996 & Newer (5750 ALVW Or Less) |
0.80 |
13.0 |
ILLINOIS EMISSION STANDARDS - IDLE TEST
| Application |
HC ppm (CO %) |
| Passenger Vehicles (6000 GVWR Or Less) |
| 1968-71 |
900 (9.0) |
| 1972-74 |
800 (8.0) |
| 1975-77 |
700 (7.0) |
| 1978-79 |
600 (6.0) |
| 1980 |
300 (3.0) |
| 1981 & Newer |
220 (1.2) |
| Light Duty Vehicles (8000 GVWR Or Less) |
| 1968-71 |
900 (9.0) |
| 1972-74 |
800 (8.0) |
| 1975-78 |
700 (7.0) |
| 1979-80 |
600 (6.0) |
| 1981-83 |
300 (3.0) |
| 1984 & Newer |
220 (1.2) |
| Heavy Duty Vehicles (8001 GVWR Or More) |
| 1968-71 |
1500 (9.5) |
| 1972-78 |
900 (9.0) |
| 1979-84 |
700 (7.0) |
| 1985 & Newer |
300 (3.0) |