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Does my diesel particulate filtration require a change?

There’s a lot of confusion for owners around the subject of ‘DPF fitted’ diesel. A filter for the exhaust which is installed on the majority of diesel vehicles of late models is called a DPF.

It’s used to remove harmful gases such as hydrocarbons and lubricants from the fuel and lubricants, and water as well as sulfates, which attach to soot and create harmful particles in exhaust fumes from diesel engines.

These harmful gases can result from a range of causes, such as inadequate maintenance or fuel quality, as well as poor driving habits that lead to poor combustion.

The DPF filter captures these particles and is then regenerated or cleaned via high-temperature fires.

Problems can occur when the regeneration process has not been completed and the filter gets blocked. Diesel particulate filters have been described as costly, complicated components that require to be replaced. This isn’t to be the case.

Replacement can be avoided when the problem is properly controlled, treated, and maintained properly. A DPF error in the engine’s computer doesn’t necessarily mean that the DPF has been blocked.

What are the signs of obstruction of DPF

Symptoms you may notice when a DPF is getting blocked and/or requires maintenance (not necessarily ready to go to the scrap pile) could be any of these:

  • Surging/poor performance.
  • Excessive fuel consumption.
  • Excessive Smoke – Blue, White, and Black
  • Engine or DPF emissions lights are displayed. Difficult to start the engine
  • The engine is running rough.
  • Inability to regenerate.

What are Regenerations?

The computer-integrated algorithms of the vehicle perform periodic renewals (burns) which is a procedure that increases the temperature in the exhaust and ‘burns away’ the particles and soot collected inside the filter. It could cause a malfunction in a component that causes it to cease functioning properly or increase its number until the problem is resolved. Smoke that is black and excessively emitted in the exhaust following regeneration. This is normal and not a risk. It’s a sign that something is wrong and that smoke blows constantly.

What can you do to minimize the risk of DPF failure/blockage?

Make sure that your mechanic is aware of how to handle diesel. Beware of oil misplaced or not used. Avoid driving with an issue in your vehicle (dash warning lights). Avoid poor-quality diesel fuel.

Modify your vehicle with caution. I address DPF driving habits – reduce idling (increase the rpm at a lower speed than load), dropping down the gear, particularly when crawling. Discuss with your mechanic any changes to your vehicle such as more raucous whistles, hissing sounds, or a jerking sensation while driving. This could result in the DPF not being regenerated. Make use of ‘on-car intake/induction cleans’ only if you are a mechanic. They could damage DPFs as well as other crucial components. Diesel Help Australia can be contacted by your mechanic to explain the reason this is not recommended.

DPF faults may be the result of component failures, but they don’t always require replacement. A maintained DPF is capable of 200,000 + km before removal for correct replacement or cleaning.

What is the cost of cleaning or replacing the DPF?

First, a warning: DPF repair MUST be done by a qualified mechanic with the right tools to reset and replace DPF. If you are at a mechanic already, make sure that they check your DPF clamps as well. Once the fault has been verified, the DPF should either be removed or cleaned with a DPF cleaning service.

An excellent DPF cleaning company must have at least 5 years of clean experience. They can also determine whether the DPF is in fact damaged inside the house.

A mechanic can test the DPF on the vehicle to determine if it’s blocked. It isn’t possible to determine whether the DPF has been melted or collapsed, causing the blockage. A passenger vehicle’s average cost of cleaning is about $600 DPF-equipped vehicles are available in a wide range of models.

Manufacturers change their designs quite regularly It is, therefore, difficult to identify which model of DPF is fitted to any one car brand. The DPF is considered to be the most tightly regulated part of motor vehicles. They don’t reveal the name of the DPF manufacturer.

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