What is a DPF?
The Diesel Particulate Filter is in the exhaust system of all diesel-powered cars sold new since 2009. It is a vital component that is designed to enable cars to pass increasingly tough emissions legislation. The DPF’s job is to trap the particles that are caused by the compression-ignition combustion process and thereby prevent harmful smoke from being pumped into the atmosphere.
How it works
As with any filter, they ‘filter’ or trap particles, in this case harmful diesel exhaust soot particles, so they have to be emptied regularly to maintain performance. The DPF needs to be cleaned regularly, through a process called regeneration, either active, passive or forced regeneration, the accumulated soot is burnt off at high temperature (around 600°c) to leave only a residue of ash, effectively renewing or regenerating the filter, ready to take on more pollution from the engine
For Optimum Performance
To maintain your vehicles peak performance the DPF needs to be clear. Our DPF Cleaning service cleans DPFs that have become blocked due to a build-up of soot caused by faults that don’t allow regeneration to occur, ensuring optimum performance for your diesel engine.
Why does my Diesel Particulate Filter (DPF) block
Every vehicle type & engine combination can have differing reasons as to why the filter blocks. The rate of particulates generated by the engine, the quality of the fuel, quality of the or oil, driving style, even the location of the DPF in the exhaust system can all contribute to the filter blocking or not regenerating fully.
Generally, the problems arise in around town stop start driving where the regeneration process might not complete. A warning light will illuminate or a message indicating the DPF is full displays on the dash. If you continue to drive in the same manner, the soot build up will increase until other warning lights illuminate and the vehicle will go into ‘limp’ mode, where driving speed is restricted.
Our process will start with a full in Depth diagnostic test and general inspection of the vehicle, the diagnostic checks will show us any issue that are causing the DPF not to function correctly and the general inspection will give us an idea of the vehicle history.Once we have done our checks and replaced any part if needed we will then perform our stage 3 DPF clean, Then the final part is to do a road test with logging the DPF data to check everything is work as it should.
A full in depth diagnostics will be our first point of action, In this diagnostic session we will be checking that key components and sensors are functioning correctly, In these checks we may identify key components that have failed and will need to be replaced before any DPF cleaning process can be done to ensure of a successful clean. We stock various DPF sensors, pipe’s etc so that we can quickly have you back on the road in the event that your DPF problem is actually a component failure.
Using our unique cleaning system, We will inject into the pre DPF pressure line the first part of the cleaning solution and allow to soak for a period of time. The engine will then be ran at a fast idle allowing the soak fluid to clean the DPF Filter. This is then followed by a further two cleaning solutions and fast idle allowing the cleaning solution to remove carbon/soot from the DPF filter.
live data is then checked on a road test or DPF regeneration. In these final checks we will log key parameters and components are functioning correctly. We will also compare pre and post DPF pressure reading and past the information on to you for your peace of mind. Finally, our stage three DPF cleaning process is now complete.