The EGR valve is a device for exhaust gas recirculation. Unfortunately, this element often causes serious problems and prevents the engine from running properly. Some decide to remove or blind the EGR, so you can count on a longer failure-free operation of the power unit.
The EGR valve is only one component of the overall exhaust gas recirculation system. By removing or blanking this part, more pollutants in the form of nitrogen oxides are released into the atmosphere. The EGR valve directs some of the exhaust gases back into the intake system while the engine is running and reduces the oxygen content supplied to the combustion chamber.
The principle of operation of the exhaust gas recirculation valve.
The exhaust and intake systems of EGR equipped engines are connected by a narrow pipe. The exhaust gas recirculation valve is part of this line and determines when the exhaust gases go to the intake system and then to the engine combustion chamber.
Does the EGR valve adversely affect engine operation?
The exhaust gas recirculation valve reduces engine power. However, keep in mind that this is not always the case. The EGR remains closed at full engine load. During longer operation of the vehicle, the exhaust gas recirculation valve adversely affects the operation of the power unit, as the engine’s intake system becomes contaminated with carbon deposits. This causes less air to enter the cylinders and the driver feels a loss of power.
The failure of the EGR valve is caused by contamination. In extreme cases, it may become completely blocked and overloaded. If the exhaust gas recirculation valve fails, black smoke can be emitted abundantly from the exhaust pipe. Aggressive effect of exhaust gases on EGR components can lead to complete damage of the valve and burn out the material inside it.
Other symptoms of EGR failure include uneven engine idling, difficulty accelerating, and cold start problems.
Removal of the exhaust gas recirculation – EGR valve