EGR (Exhaust Gas Recirculation) valve is a component in a vehicle's engine that recirculates a portion of exhaust gas back into the engine's intake manifold. @Sameer_AutoElectrician @Alsharif Auto Branch 2 @ASA Car Information @ASA Auto Tricks #egr #combustion #manifold #intake #valve Its main purpose is to lower combustion temperatures and reduce harmful nitrogen oxide (NOx) emissions, which are formed at high engine temperatures. A faulty EGR valve can lead to engine performance issues like reduced power, rough idling, and a lit check engine light. _____ How it Works 1. Reduced Combustion Temperature: By introducing inert exhaust gases into the intake, the EGR valve dilutes the air/fuel mixture and lowers the oxygen level and combustion temperature. 2. NOx Emission Control: Lower temperatures in the combustion chamber significantly decrease the formation of nitrogen oxides, a major pollutant. 3. Controlled Recirculation: The EGR valve opens and closes to control the amount of exhaust gas that is recirculated based on driving conditions and engine load. _______ Symptoms of a Faulty EGR Valve Check Engine Light: A malfunctioning valve will often trigger the check engine light. Poor Engine Performance: This can include a noticeable decrease in engine power and acceleration. Rough Idle: The engine may run poorly or vibrate excessively when idling. Increased Fuel Consumption: In petrol engines, a stuck EGR valve can increase the chance of spontaneous combustion or engine knock, leading to higher fuel use. Failed Emissions Test: A faulty EGR valve can cause the vehicle to fail an emissions test. - @alrafiqueautocare