Vauxhall Astravan 1.7 Cdti For Sale From UK At Reasonable Price
Valves Inside The Vauxhall Astravan 1.7 Cdti For Sale Play A Key Role To Reduce The Pollution
The Exhaust Gas Recirculation valve or EGR valve (Exhaust Gas Recirculation), is a very important component of Vauxhall Astra van 1.7 cdti for sale and other motor vehicles, both gasoline and diesel. This valve began to be used to reduce the emission of polluting gases into the air. If the EGR valve becomes clogged or malfunctions and malfunctions, it can affect engine performance and may cause unstable idling, unstable acceleration, jerking, high fuel consumption or complete engine failure.
To Produce Less Nitrogen Oxides
The EGR valve works by returning a small amount of exhaust air back to the combustion chamber to reduce the temperature and produce less nitrogen oxides. These nitrogen oxides from a black smoke when combined with air (the smoke that they do not admit in the ITV). When more power is required this valve closes so that there is more oxygen in the combustion chamber. There are two types of EGR valves: mechanical and electronic. The mechanics open and close depending on the pressure exerted by the air, which increases or decreases depending on the work of the engine. The electronic versions use components that respond to oxygen concentrations to regulate air intake and gas recirculation. Please note, when a buyer does Vauxhall astravan 1.7 cdti review to buy that so he should carefully check the discussed aspect because that one has a correlation with the Vauxhall Astravan 1.7 cdti price as well as its release value.
When Valves Stuck
Whether the EGR valve remains always open or always remains closed, it will cause performance problems and some major problems. According to data published by the European Network Vehicle Warranty Group, problems in EGR valves are the most frequent failure in cars that are still in the warranty period.If the valve gets stuck and remains always open, it will fill the exhaust gas combustion chamber. This leads to inefficient or irregular combustion due to the low amount of oxygen present in the chamber, oxygen that is essential for proper combustion. It can be checked if it has been left open by starting the stopped car with the handbrake and observing if the piston remains open.
Pay Attention With Care
Otherwise, if the valve is stuck and remains permanently closed, the production of nitrogen oxides and thus the emission of smoke will increase. To verify this fault, the engine can be started and, leaving the car stopped with the handbrake, accelerating and heating the engine to check if the valve opens. In both cases, it is possible that the EGR valve requires only a cleaning. This cleaning is easier in mechanical valves. In electronic valves, it is more likely that the complete part will need to be replaced with a new one. This valve is expensive so you should go to a reputable workshop to make sure it needs to be changed and not repaired or cleaned. Having the EGR valve working poorly does not usually give safety problems in the vehicle but it will shorten the life of the engine and emit a lot of contamination.
