EGR valve is working with a small number of the route the exhaust gases into the combustion chamber. If the temperature in the combustion chamber is too high, the nitrogen oxide is produced, which combines with elements in the atmosphere to form smog. Introduce a small amount of exhaust gas into the system to reduce the temperature in the combustion chamber, reducing the amount of nitrogen oxides produced.
EGR valve is generally are mechanical, and only have a small valve that opens to allow the exhaust to the combustion chamber and will shut down if it is not needed, as well as to maintain an optimal mix of air for combustion.
Some mechanical version will not open until there are enough back pressure, make sure that the valve will not open when the machine is idle or warm up and needs a higher concentration of oxygen for combustion. Electronic EGR valves are also available, and use electronics to adjust the valves.
If the EGR valve is stuck open it will cause vacuum leaks, inefficient combustion, stationary, hesitate, and sometimes stalling proceedings in cases of extreme. This is because the car's engine could not burn the carbon dioxide from the exhaust that should require oxygen atmosphere. If the combustion chamber is flooded from the EGR valve exhaust gas that is open, then it will not work properly.
To check and see if the EGR valve is stuck open, then needed someone to station inside a parked vehicle with the brakes when you check the plunger shaft to see if EGR valve is stuck open or has not been already.
If the EGR valve is stuck closed then the nitrogen oxide emissions will go up and the car engine may start knocking or tapping. The sound of a knock occurs when the fuel mixture in the combustion chamber in the cylinder ignites before the blast had been reached. In this case, the engine must be warmed up and rotate the EGR valve to see if it will move.
In both those cases, simple repair may be performed. In the case of a clogged EGR valve cleaning EGR valve then a simple mechanical will solve the problem. Whereas in the case of EGR valve is controlled by a system of electric or mechanical problems are more complex then the valve replacement may be required.
EGR valve is a component of the motor vehicle, and care should be taken to ascertain whether the EGR valve needs to be replaced or it could still be improved. EGR valve is a component of the motor vehicle, and proper care should be taken to ascertain whether the EGR valve needs to be replaced or it could still be improved.
Failure to repair or replace the EGR valve will not cause life-threatening conditions, however this will cause your car's engine to be less primed and increase potential emissions. Especially in areas that require testing of smoke, a car with a faulty EGR valve may not be tested.