Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMAZDA1991NAVAJO LX, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONENGINE PERFORMANCESTATE EMISSION STANDARDS - GASNEW YORK
1991 Mazda Navajo LX, Automatic
New YORK
1991 Mazda Navajo LX, AutomaticSECTION New YORK
NEW YORK EMISSION STANDARDS - IM240 TEST
| Application | HC gpm Composite |
HC gpm Phase 2 |
CO gpm Composite |
CO gpm Phase 2 |
NOx gpm Both |
|
|---|---|---|---|---|---|---|
| Light Duty Vehicles | ||||||
| 1981-82 | 0.80 | 0.50 | 30.0 | 24.0 | 2.0 | |
| 1983-95 | 0.80 | 0.50 | 15.0 | 12.0 | 2.0 | |
| 1996 & Newer | 0.60 | 0.40 | 10.0 | 8.0 | 1.5 | |
| Light Duty Trucks (6000 GVWR Or Less) | ||||||
| 1981-83 | 3.40 | 2.00 | 70.0 | 56.0 | 4.5 | |
| 1984-87 | 1.60 | 1.00 | 40.0 | 32.0 | 4.5 | |
| 1988-95 | 1.60 | 1.00 | 40.0 | 32.0 | 2.5 | |
| 1996 & Newer (3750 LVW Or Less) | 0.60 | 0.40 | 10.0 | 8.0 | 1.5 | |
| 1996 & Newer (3751 LVW Or More) | 0.80 | 0.50 | 13.0 | 10.0 | 1.8 | |
| Light Duty Trucks (6501-8500 GVWR) | ||||||
| 1981-83 | 3.40 | 2.00 | 70.0 | 56.0 | 4.5 | |
| 1984-87 | 1.60 | 1.00 | 40.0 | 32.0 | 4.5 | |
| 1988-95 | 1.60 | 1.00 | 40.0 | 32.0 | 3.5 | |
| 1996 & Newer (5750 ALVW Or Less) | 0.80 | 0.50 | 13.0 | 10.0 | 1.8 | |
| 1996 & Newer (5751 ALVW Or More) | 0.80 | 0.50 | 15.0 | 12.0 | 2.0 | |
NEW YORK EMISSION STANDARDS - IDLE TEST
| Application | HC ppm (CO %) | |
|---|---|---|
| Light Duty Vehicles (8500 GVWR Or Less) | ||
| 1978 | 300 (3.0) | |
| 1979-80 | 300 (2.5) | |
| 1981 & Newer | 220 (1.2) | |
| Heavy Duty Vehicles (8501 GVWR Or More) | ||
| 1978 | 600 (4.5) | |
| 1979 & Newer | 300 (3.0) | |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.