How Do I Clean My Car DPF Without Removing It?


Large volumes of particulate matter, also called particulate matter or soot, are released by diesel engines(DPF). When inhaled, this particulate matter has been linked to lung problems and cardiovascular disease. The purpose of Diesel Nanoparticles Filters (DPF) is to reduce various types of emissions. Diesel particulate filters (DPFs) physically capture and hold the particles that are released into the atmosphere when diesel is burned.

With certain materials, 80–90% of the particulates can now be removed. DPF filters are the most effective at capturing significant diesel particulate matter (PM), such as charcoal (soot) and the accompanying black smoke emission, making them the most cutting-edge technology for reducing the emission of particles in diesel-powered cars. The UK DPF filter cleaning service effectively gets rid of soot and particle accumulation, improving the performance of your car and lowering dangerous pollutants.

The filter is designed to collect any unburned particles so that those harmful particles can’t enter the air and damage your car. First and foremost, you need to be aware that removing a blocked DPF filter requires caution. Continue reading to learn the common errors people commit while cleansing a DPF filter, whether to avoid them and how to correctly remove a blocked DPF filter on your own! These errors may cause the filter to sustain expensive or irreversible damage.

Making Use of Active Recovery

Keep an eye out for the DPF symbol, which denotes the necessity for cleaning. Look for a small, rectangular caution symbol featuring circles in the centre that are either yellow or orange on the dashboard panel. This icon indicates the extent to which DPF soot accumulation has reached a potentially hazardous threshold. When you notice the warning symbol, always clean the DPF right away.

Moreover, the caution mark indicates that passive regeneration was unsuccessful. Particles of carbon soot are automatically burned off by this process. But it only occurs whenever the exhaust temperatures stay extremely warm for an extended period. Making frequent, short journeys instead of extended travels reduces the likelihood of passive regeneration.


The first and most important step in cleaning the DPF with Wynn’s solution is to fill the petrol tank. Next, add additives to the fuel tank. Following the recommended dosages (for the full bottle) is essential for the best results.

Check The Filter

When it can be tested, the DPF must be taken out of the automobile entirely and examined briefly. This will enable you to evaluate the degree of clogging, obstruction, and possible damage to the filter. You’ll be able to tell whether the DPF filter is obstructed and how to clean it if there is a considerable debris blockage and little to no white or the chromium surface surrounds the filter.

Use Compressed Air To Clean

Starting a DPF cleaning process with high-pressure compressed air is a standard practice. The most effective way to accomplish this is to use a high-pressure cleansing cabinet, which forces ash to remove any blockage by back-flushing compressed air through the filter. When using compressed air, you need to take the following crucial safety measures:

  • Weigh its DPF to get its “pre-cleaning weight,” if necessary.
  • After inserting the DPF with caution, firmly shut the blast cabinet.
  • Activate the device to start applying high-pressure air to the DPF. Additionally, suction ought to be used at the DPF’s bottom to aid in clearing out any ash or particles.
  • Your filter has to be cleaned once it has been pressurized. To get rid of any soot or ash that wasn’t removed on the first try, you might need to repeat this procedure. 
  • You can take the DPF out of the cupboard and put it back in your car once all of the cells have unblocked!

Turn Off The DPF Filter

After effectively cleaning the DPF’s surface, rinse the filter with fresh water. However, how can a DPF filter be cleaned with water? To completely clean the DPF, it is advised that you utilize a hose or tap with a high-pressure region nozzle and spray it down without a narrow jet. Continue rinsing your DPF until the solution runs clean. You should be noticing a steady flow of filthy water leaving the filter as the water becomes angled to shoot out of both ends of it.

When You Reach 40 Mph (64 Kph), The Active Regeneration Will Start

Look for a motorway or long, level stretch of road where you won’t likely need to stop or slow speed. Start the car and keep an eye on the speed of the vehicle along with the engine. Aim to maintain the engine running at about 2500 rpm.

  • Active regeneration raises the DPF’s temperature, converting the particles into a gas that may be released.
  • These are only approximate speeds. To determine the best practice for your car, consult the handbook.

Final Words

Regularly cleaning your car’s particulate filter is essential to maintaining minimal emissions and maximum engine performance. You can extend the life of your particulate filter and reduce harmful emissions, both of which are good for the planet as a whole. Simply adhere to the simple directions in this article.

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Article Author Details

Ron Johnson