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.
2021 Mazda CX-3 AWDFACTORY OEM SERVICE PROCEDURE
Fuel System
- After Service Precaution
- Before Service Precaution
- Fuel Draining Procedure
- Fuel Filter (High-Pressure) Removal/Installation
- Fuel Injector Inspection
- Fuel Injector Removal/Installation
- Fuel Line Pressure Inspection
- Fuel Pump Control Module Inspection
- Fuel Pump Control Module Removal/Installation
- Fuel Pump Unit Disassembly/Assembly
- Fuel Pump Unit Inspection
- Fuel Pump Unit Removal/Installation
- Fuel System Flow Diagram
- Fuel System Location Index
- Fuel Tank Inspection
- Fuel Tank Removal/Installation
- Notes
- U.S.A. and CANADA Specs.
- Except U.S.A. and CANADA Specs.
- 2WD
- AWD
- Fuel-Filler Pipe Removal/Installation
- High Pressure Fuel Pump Inspection
- High Pressure Fuel Pump Removal/Installation
- Notes
- Without Coolant Control Valve
- With Coolant Control Valve
- High Pressure Fuel Pipe Removal Note
- Rear Housing Removal Note (Without coolant control valve)
- Rear Housing Removal Note (With coolant control valve)
- Rear Housing Installation Note (Without coolant control valve)
- Rear Housing Installation Note (With coolant control valve)
- High Pressure Fuel Pump Installation Note
- High Pressure Fuel Pipe Installation Note
- Fuel Leakage Inspection After High Pressure Fuel Pump Installation
- Non-Return Valve Inspection
- Quick Release Connector Removal/Installation
Factory Service Tools
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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.
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