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 MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 47 (ENGINE CONTROLS - SELF-DIAGNOSTICS)SYSTEM TESTSFUEL LINE/FUEL PRESSURE HOLD INSPECTION
2010 Mazda 5 Sport, 2.3 L, Standard
Fuel Line/Fuel Pressure Hold Inspection
2010 Mazda 5 Sport, 2.3 L, StandardSECTION Fuel Line/Fuel Pressure Hold Inspection
WARNING: This page is about a different car, the 2002 Mazda Tribute. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Before performing the following operation, release the fuel pressure from the fuel system to reduce the possibility of injury or fire. See FUEL PRESSURE RELEASE
under FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article.
- Check Fuel Pressure
Install Fuel Pressure Gauge. Turn ignition on, engine off. Connect scan tool to DLC. Select DIAGNOSTIC DATA LINK, PCM, ACTIVE COMMAND MODE, fuel pump PID and OUTPUT TEST MODE. Press MODE to change to ALL ON MODE. Press START to run fuel pump and observe fuel pressure. If fuel pressure is 55-70 psi (380-482 kPa), - Check Fuel Pressure After One Minute
Observe fuel pressure after one minute. Press STOP. If fuel pressure is within 5 psi (34 kPa) of previous reading, fuel pressure hold inspection is okay. If fuel pressure is not within 5 psi (34 kPa) of previous reading, check for fuel injector leakage.
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.