Do I have to change my diesel particulate filter?

A DPF is an exhaust filter that is fitted to most late-model diesel vehicles. It is utilized to remove harmful gases, such as hydrocarbons, from fuel or lubricants and water and sulfurates that attach to soot and form dangerous particles.

These dangerous gases can be the result of a variety of contributing factors: improper or inadequate maintenance, poor quality fuel, and poor driving habits which lead to poor combustion.

These particles are captured by the DPF filter and later cleaned or recycled via high-temperature burnings. When this regeneration is unsuccessful and the filter becomes clogged up, problems can be the result.

There is a belief that the diesel particulate filter is a complex and costly component that needs to be replaced. However, I have discovered that this is not accurate.

If you’re well maintained and monitored, a replacement can be avoided. DPF faults are not always an indication that the DPF is blocked.

What are the signs of obstruction of DPF?

The following symptoms could be present when your DPF becomes blocked or needs maintenance.

  • Surging/poor performance.
  • Excessive fuel consumption.
  • Smoke Excessive – White, blue, black.
  • Display of engine and/or DPF emissions light.
  • It is difficult to start the engine.
  • The engine is running rough.
  • Regeneration attempts that fail.

What are the definitions of regeneration?

The computer in the vehicle’s embedded algorithms runs periodic renewals (burns). It is a procedure where the system increases the temperature of the exhaust, and then ‘burns off’ any particles that have accumulated in the filter.

A component that isn’t functioning properly can lead to an increase in regenerations, or even stop them entirely until the problem is corrected. The exhaust will then emit an excessive amount of black smoke, as a result of regenerations. This is normal and not a risk. If smoke is blowing continuously, it means that there is a root issue and immediate attention is required.

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

  • Make sure that your mechanic is aware of how to work with diesel.
  • Avoid incorrect oils and missing services.
  • Be careful not to drive if you are experiencing a problem with your car (dash warning lights).
  • Avoid poor-quality diesel fuel.
  • Modify your car with attention DPF habits of driving – I cut down on idle time and increase the rpm when under loads (dropping down a speed), especially in crawling.
  • Help your mechanic understand the changes in your car like louder whistles, hissing noise, or a jerking feeling while driving. These unexpected changes in driving could cause your DPF not to regenerate.
  • Avoid making use of “on vehicle intake and induction cleaners” even if your mechanic has recommended them. They could damage DPF’s as well as other important components.
  • Components that fail and cause DPF faults do not necessarily mean the DPF has to be replaced.
  • Maintained DPFs cover 200,000+ km before they require to be taken out to be cleaned or replaced.

What’s the price for replacing or cleaning a DPF?

First of all, be conscious that DPF work must be performed by a certified skilled mechanic with the proper tools to reset and re-fit the DPF. After the first problem has been identified, the DPF must be taken off and either cleaned using the recommended cleaner or cleaned by a DPF cleaning service. A reputable DPF cleaning service must have at least 5 years of successful cleaning experience.

They can also determine if the DPF is actually damaged internally. To determine if the DPF is blocked, a mechanic will inspect the vehicle.

They cannot confirm if the DPF has been melted or collapsed internally creating the blockage. The average clean cost for an automobile for a person is $600.

Vehicles with DPF’s are available in a range of models. Manufacturers alter their designs often, making it difficult to determine which DPF model is compatible with a particular automobile model.

Due to the DPF being considered to be the most regulated emissions component in motor vehicles, they don’t expose who the DPF manufacturer is.