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EGR Valve
Exhaust Gas Recirculation valve reducing nitrogen oxide emissions.

The EGR valve recirculates a small portion of exhaust gas into the intake to lower combustion temperature and reduce NOx formation. Carbon buildup can cause sticking or malfunction. Regular cleaning ensures consistent performance. Modern electronic EGR systems allow precise control through the ECU. Proper operation maintains emission balance and prevents knocking.
Applying This Knowledge in Practice
The diagnostic principles discussed above are commonly applied in real-world vehicle diagnostics. To put this knowledge into practice, explore professional automotive diagnostic tools designed to support system testing, fault analysis, and troubleshooting across modern vehicles.
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