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ALL cars, vans, utes and trucks.

Fast turnaround.

ALL cars, vans, utes and trucks.

Fast turnaround.

Effectiveness up to: 

Environmentally Friendly.

Cleaning Liquid – Lab Tested Safe

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%

Effectiveness up to: 

%

Environmentally Friendly.

Cleaning Liquid – Lab Tested Safe

%

DPF Cleaning Service.

Have your Diesel Particulate Filter (DPF) cleaned by one of our trained technicians.

It’s as easy as:

1

Send your blocked DPF to Turbo Care.

2

Our trained technicians will inspect your DPF for internal damage.

3

We will provide pre-clean and post-clean reports with photographs.

4

The cleaned DPF is returned to you for refitting and reset.

All About DPF Cleaning.

Learn more about DPF and DPF Cleaning.

Our DPF Cleaning Process
  1. Inspection of the ceramic filter core with an inspection camera. The filter cartridge that qualifies for cleaning cannot be cracked, melted, sealed.
  2. Installing the filter in the cleaning machine.
  3. Back pressure test, showing the degree of clogging of the filter before cleaning.
  4. Start the cleaning process.
  5. Analysis of dirty water coming out of the filter (colour, amount of oil).
  6. Cleaning (10 – 20 min).
  7. Drying (around 30 min).
  8. Back pressure test, showing the degree of clogging of the filter after cleaning. In the absence of full flow, returning to point 5.
  9. Taking pictures of the filter cartridge with an inspection camera.
  10. Preparation of the report.
Why Do Vehicles Have a DPF Fitted?

DPFs (Diesel Particulate Filters) were first introduced to New Zealand in 2009. In order to meet stringent emissions regulations all new diesel vehicles are fitted with an exhaust filter (DPF).

Diesel particulate levels were reduced to extremely low levels to reduce the allowable amount of particulate matter (PM) released into the atmosphere.

Reducing the size of PM from the combustion process to this level was not technically possible, without fitting a filter to capture soot and other harmful particles, preventing them entering the atmosphere. A DPF can remove around 85% of the particulates from the exhaust gas.

Current WOF and COF Regs

NZ legislation for exhaust emissions has been clarified with a VIRM: In-service certification (WoF and CoF) amendment effective 2 December 2019.

It states the following:

11-2 Exhaust emissions

A diesel particulate filter (DPF) is not allowed to have been removed unless the vehicle’s owner/registered person can prove the vehicle is still able to pass a prescribed metered emissions test.

Read more about these recent changes.

What Happens When a DPF is Blocked?

A blocked DPF will not work correctly, to clear this blockage there are two types of regeneration which are commonly used to remove the build-up of soot.

Newer vehicles engage active regeneration, which is the process of removing the accumulated soot from the filter by adding fuel post combustion to increase exhaust gas temperatures and burn off the soot, providing a temporary solution.

Passive regeneration takes place automatically on motorway-type runs when the exhaust temperature is high.

Many manufacturers have moved to using active regeneration as many motorists do not often drive prolonged distances at motorway speeds to clear the DPF, constant short distances are not good for the turbo or exhaust system.

Types of Pollutants

Soot

Soot is a product created during incomplete combustion of fuels.

Generally, we can distinguish two types of soot accumulation

1. Pore accumulation

Solid particles are deposited in the pore network inside the material of the filter wall.

Although only a small portion of soot accumulates in the micropores of the filter, it contributes to a sharp increase in the pressure drop in the filter.

Depending on the level of soot load and filter type, pore accumulation may in some cases constitute a 50% drop in the filter pressure, or even more.

2. Soot cake

As the soot charge increases in the pore network, the layer of particles begins to form along the wall surface in the inlet channels, and soot cake becomes the dominant filtration mechanism.

Soot Cake

Ashes

Ash accumulates in DPF during prolonged use, as a non-flammable material left after filter regeneration and soot oxidation. Ash consists of various metal compounds derived from lubricating additives, trace elements in fuel and wear of the engine and corrosion products.

Ash

Motor Oil Contamination

Resulting from a leaky engine intake system (eg turbocharger failure). Oil gets into the filter cartridge (monolith) where it burns out.

Burnt Oil

Can the DPF Cause Turbo Failure?

A blocked DPF prevents exhaust gas passing through the exhaust system at the required rate. As a result back pressure and exhaust gas temperatures increase within the turbine housing.

Increased exhaust gas temperature and back pressure can affect the turbocharger in a number of ways, including problems with efficiencies, oil leaks, carbonisation of oil within the turbo and exhaust gas leaks from the turbo.

We are seeing more and more turbocharger failures as a result of blocked DPF units. When this is the cause of turbocharger failure we strongly recommend having your DPF cleaned to prevent further failures with replacement turbos.

Can You Prevent Turbo Failure Caused by DPF’s?

It is essential to identify the failure mode and determine whether a DPF related issue is the root cause. If the entire rotor assembly is ok, and there are some signs of overheating towards the turbine side of the core assembly then the failure is likely to be caused by excessive exhaust gas temperatures. High amounts of carbon build-up within the VNT mechanism and lever arms indicate a blocked DPF, and the driver of the vehicle may experience turbo lag or over boost of the turbo.

it takes time for a DPF to block, sometimes years. Once blocked though, turbo failure can occur very quickly. If you don’t check for a DPF issue when installing a replacement turbo, there is a very high chance the replacement turbo will suffer the same failure, as it will be subject to the same operating environment as the previous unit.

News.

Learn more about DPF and DPF Cleaning.

Turbo Failure – Blocked DPF

Turbo Failure – Blocked DPF

BLOCKED DPF – Part two on our series for failed turbos covers blocked Diesel Particulate Filters (DPF) and the damage these can do to your turbo. Recently we have seen an influx of damaged turbos caused by blocked DPFs.

read more