Diesel Particulate Filter Cleaning

Many modern diesel vehicles are now equipped with a diesel particulate filter (commonly known as DPF as FAP). These are necessary to adhere to the ever more stringent EU emissions standards. Although manufacturers like to suggest that these can last the lifetime of the vehicle, it is becoming an all too common occurrence for them to fail by becoming completely blocked. This results in rough running as the vehicle unsuccessfully tries to regenerate the filter, and normally results in the vehicle going into limp mode, which makes then dangerously underpowered in most cases. Needless to say a blocked filter badly impacts economy also.

There are a number of reasons why the filters become blocked, but the main reason is because the vehicle is being used mainly for stop-start town driving, and therefore is unable to successfully complete the filter regeneration. The other major contributing factor towards premature DPF failure is due to a failed or failing EGR valve, thus allowing too much exhaust gas to enter the intake manifold and ultimately overwhelming the filter to the point that it becomes irreparably blocked.

We can offer a service to clean the DPF without removal and repair/replace the EGR valve if required.

More detailed information regarding the DPF is available at the wiki site http://en.wikipedia.org/wiki/Diesel_particulate_filter