Essentially, the DPF filter is the part of the exhaust system that’s closest to the engine. 3. How does The DPF Filter Work? Diesel engines are internal combustion engines. The cylinders in the engine compress air with such force that the air becomes a dense gas– dense enough that it becomes superheated, igniting the diesel fuel.
One of the first symptoms of a possible problem with the EGR control solenoid is engine performance issues. If the EGR solenoid has any issues, it can cause the finely tuned air fuel ratio to be thrown off. This may result in a decreased power, acceleration, fuel economy, as well as an increase in emissions. 2. Engine pings or knocks.
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