DPF and EGD Cleaning


As the number of cars in the world increases, the amount of particulates in the air increases unknowingly. Reducing the amount of particles possible using a catalyst, an even more efficient way - DPF filters (Diesel Particulater Filter). Manufacturers have been installing this system since about 2004, and French manufacturers have begun installing the FAP system since 2000.

Naturally, dpf filters are not an eternal thing. They roughly operate at around 120 tx. km The temperature and pressure sensors are continuously monitored for the DPF blockage level. In the event of poor operating conditions, poor fuel consumption or other unrelated failure with the DPF system, this system will eventually clog and start operating again. Then the regeneration starts - forced filter cleaning. DPF filters perform only a few successful regenerations, then they just do not succeed because they lose their properties due to the high temperature overheating that occurs during regeneration.

In stop/start traffic, or on short journeys, a regeneration may not get time to complete. This will cause the DPF to block partially and an orange light will come on in the instrument cluster. Ignore the light and continue driving slowly or in traffic and eventually the engine will lose power and stop. This will prompt a trip to the garage and things will get expensive.

If you have problems with DPF / FAP soot filter systems, please contact us and we will help you.


The EGR valve is a small component designed to allow the flow of exhaust gases into the intake manifold in controlled amounts. As such, it's a simple valve that closes and opens as needed. The EGR valve has one single job to do, regardless of the system configuration, type of control and number of sensors: that is, to either open and direct exhaust gases into the combustion chamber, or to close and keep them from entering.

Whenever you start the engine, the valve comes alive and waits in a closed position, blocking the flow of exhaust gases.

Once the engine reaches operating temperature and speed increases, the valve — either through vacuum or electronic control — gradually opens, allowing burned exhaust gases to enter and combine with the air-fuel mixture inside the combustion chamber. If you slow down sufficiently or come to a stop, the valve gradually closes and blocks the flow of exhaust gasses. And the process continues for as long as the engine is running.


Pinging (spark knock or detonation) because the EGR system is not working, the exhaust port is plugged up with carbon, or the EGR valve has been disabled.

Rough idle or misfiring because the EGR valve is not closing and is leaking exhaust into the intake manifold.

Hard starting because the EGR valve is not closing and is creating a vacuum leak into the intake manifold.