WhoCanFixMyCar (WCFMC) is delighted to announce DPF Clean Team has joined the platform and has got off to a flying start having won 65 jobs (October 17) through the platform.

Over 1,000 Diesel Particulate Filter jobs are posted to WCFMC by drivers each month and DPF Clean Team is a business which specialises in the cleansing of the DPF, a part fitted to every diesel fuelled car.

It is a legal requirement for a DPF to be fitted to a diesel car as the part prevents harmful particles from entering the air and lungs of the public.

The media has recently reported (October 17) that a huge number of vehicles which should have a DPF fitted, are being driven without the part, which is against the law.

As air pollution continues to rise as an issue of public concern, this article will discuss how the process of cleaning is handled by a specialist such as DPF Clean Team and why it is so important to ensure the DPF on your car is operating at full capacity.


What is a DPF?

A Diesel Particulate Filter is fitted to the exhaust system of diesel cars and stops harmful particles from entering the atmosphere following the combustion of fuel within a car engine.

how a dpf works



As you can see from the illustration above, the cell plugs inside the DPF prevent the soon and ash particles from escaping and becoming a hazard.

However, over time the cell plugs will become clogged and lose effectiveness.


As you can see from the image above, the DPF can become incredibly clogged and damaged as a result of neglect.


Air Pollution

According to DPF Clean Team, it is estimated that the equivalent of 9,400 premature deaths occur each year in London alone. This is due to the long-term exposure to air pollution that Londoners suffer and the fact that 448 schools in the capital are in areas which exceed legal air pollution quality levels.

Now that you know why it is so important to have a fully functional DPF, we’ll explain what you can do to keep it clean.

How is a DPF Cleaned

Fortunately, Diesel particulate matter burns when temperatures above 600 degrees are attained during a process called ‘regeneration’.

Regeneration is triggered in a car by an onboard computer when it detects that the DPF is becoming clogged and this is an automatic function which your car will carry out itself.

However, regeneration often fails and the only way to clear the DPF of soot is by having an expert take action, which is exactly where DPF Clean Team come in.

How to clean a DPF

DPF Clean Team employ three key methods of cleaning a DPF, Ultrasonic Cleaning, Kiln Cleaning and Pressure Pulse Cleaning.

DPF Ultrasonic Cleaning

Ultrasonic Cleaning is recommended when there is only a moderate level of blockage and this will be assessed as soon as the part is inspected by DPF Clean Team. If it is suitable for this type of service, the process will begin with the part being placed into a specialist chemical bath and subjected to a sequence of ultrasonic treatments.

DPF Kiln Clean

A Kiln Clean is very straightforward as the entire part is simply put into a kiln and heated up to 900 degrees as shown below.

The heat literally burns away the soot present in the DPF.

DPF Pressure Pulse Clean

During a Pressure Pulse Clean, the DPF will be flushed with specialist fluid and pressure loaded to identify which cells are blocked in order to be able to clear them out.

Why should I get my DPF cleaned?

As mentioned above, there is a genuine and direct risk to the health of the public if a Diesel Particulate Filter is not filtering out dangerous particles, however, the risks are not limited to air pollution.

If your Diesel Particulate Filter becomes blocked, your car may suffer damage to its turbo and it may also suddenly revert to limp mode which restricts the car to a certain speed.

You may be driving along the motorway only to suddenly lose power and only be able to drive at 30mph.

The warning light, shown below, will come on if there is a problem with the Diesel Particulate Filter. Here are the likely problems which will cause the light to switch on and what you need to do for each issue.

Problems with Glow Plugs

If white smoke is being produced and the engine fails to start, the glow plugs may be the root cause of the problem. Lubricating the piston rings may resolve the issue.

Failed EGR valve

Simply clean the valve using a carb cleaner solution and the warning light may disappear.

Temperature/Pressure Sensor Problem

There is nothing you can do if there is a problem with the sensors in your car, you will need to take it to a garage for repair.

Exhaust/Injection System

Try cleaning the immediate area when the exhaust is cool if you see smoke coming from the area which is a different colour than usual or if you can smell sulfur.

Stop-Start Driving

The clogged Diesel Particulate Filter may be causing this issue though driving on a motorway for around 20 minutes may resolve the problem through the process of regeneration.

Failed Turbo

Your turbo may fail as a result of using the wrong engine oil. You might expect the engine oil light to come on for this fault but there is also a strong chance that the Diesel Particulate Filter light will also come on.

Should I Replace My DPF?

Though you can get a brand new Diesel Particulate Filter fitted if your current one is full of soot, it is not the most environmentally friendly or economical decision you can make.

Industry figures show that up to 70% of DPF’s are unnecessarily scrapped which means a huge number of drivers are paying more money for replacements when a cleaning service will restore the part to perfect working condition 96% of the time. A clean will only ever take 24 hours using the techniques listed above, whereas getting a new DPF fitted will require a car to be off the road for longer.

New Legislation and Manufacturer Changes

This year, a new set of rules regarding diesel emissions will come into effect as the amount of soot and CO2 emitted will be required to be reduced.

The Volkswagen Group and all of its subsidiaries will be fitting diesel particulate filters to the exhaust systems of all of its direct-injection petrol engines from 2017 in a bid to cut soot by up to 90%.

The parts will be rolled out on cars with TSI and TFSI engines made by Volkswagen Group brands such as Audi, Bentley, SEAT and Skoda.

Paris has also announced that it will be banning all diesel AND petrol cars from its streets by 2030 while the rest of France will be totally diesel free from 2040.

The UK has announced a similar ban this year with all diesel cars to be banned by 2040, though Oxford will ban all diesel and petrol vehicles in 2020.

I want my DPF cleaned

WhoCanFixMyCar and DPF Clean Team will be working together to help as many drivers with their DPF problems and if you would like a quote for a cleaning service, you can click here to get a quote from the team.


If you have any more questions, leave a comment or send us a message on Facebook by clicking here.

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