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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 7 (ENGINE CONTROLS - SYSTEM/COMPONENT TESTS - 2.3L)EMISSION SYSTEMS & SUB-SYSTEMSEXHAUST GAS RECIRCULATION (EGR) SYSTEMEGR VALVE
2010 Mazda 5 Sport, 2.3 L, Standard

EGR Valve

2010 Mazda 5 Sport, 2.3 L, StandardSECTION EGR Valve
WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.

Warm engine to normal operating temperature and operate at idle. Disconnect and plug vacuum hose at EGR valve. Engine should run smoothly. Connect vacuum pump to EGR valve, and apply vacuum. Engine should run rough or stall. If engine does not operate as specified, replace EGR valve.

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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.