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 MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 148 (EMISSION SYSTEM)
1999 Mazda 626 ES, 2.5 D, Standard
Section 148 (Emission System)
1999 Mazda 626 ES, 2.5 D, StandardSECTION Section 148 (Emission System)
WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Evaporative Emission (EVAP) Control System Location Index
- Evaporative Emission (EVAP) Control System Diagram
- Evaporative Emission (EVAP) Control System Component Removal/Installation
- Engine Room Side
- Catch Tank Removal Note (L3)
- Catch Tank Installation Note (L3)
- Purge Solenoid Valve (L3) Installation Note
- Purge Solenoid Valve (AJ) Installation Note
- Fuel Tank Side
- Charcoal Canister Removal Note
- Charcoal Canister Installation Note
- Evaporative Hose Removal Note (Type A)
- Evaporative Hose Removal Note (Type B)
- Evaporative Hose Installation Note
- Fuel-Filler Cap Inspection
- Air Filter Inspection
- Charcoal Canister Inspection
- Evaporative Emission (EVAP) System Leak Detection Pump Inspection
- Catch Tank Inspection
- Purge Solenoid Valve Inspection
- EGR System Location Index
- EGR System Diagram
- EGR Valve Removal/Installation [L3]
- EGR Valve Removal/Installation [AJ]
- EGR Valve Inspection [L3]
- EGR Valve Inspection [AJ]
- EGR Boost Sensor Solenoid Valve Inspection [AJ]
- Positive Crankcase Ventilation (PCV) System & Catalytic Converter System Location Index
- Positive Crankcase Ventilation (PCV) System Flow Diagram
- PCV Valve Inspection [L3]
- PCV Valve Inspection [AJ]
- Three-Way Catalytic Converter (TWC) Inspection
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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.