There are many articles and technical documents relating to how a faulty turbo can lead to DPF damage, however, the DPF is actually responsible for more turbo related failures than you might think. Here we explore what effect a blocked DPF can have on a turbocharger.

DPF’s (Diesel Particulate Filters) were first introduced in January 2005 with the Euro 4 emission standard, where 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, so this meant all diesel vehicles after September 2009 were fitted with 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.

A blocked DPF will not work correctly, and in order to clear this blockage there are two types of regeneration that are commonly used to remove the build-up of soot. Newer vehicles engage active regeneration, which is the process of removing 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 and constant short distances are not good for the turbo or exhaust system.

So, what happens to the turbo when a DPF is blocked?
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.

How to spot a turbocharger that has suffered from DPF problems:

  • Discolouration of parts within the core assembly (CHRA) usually with evidence that the heat is transferring through the CHRA from the turbine side. This excessive temperature within the CHRA is caused by back pressure forcing the exhaust gas through the piston ring seals and into the CHRA. The high temperature exhaust gas can prevent efficient oil cooling within the CHRA and even carbonise the oil, restricting oil feeds and causing wear to the bearing systems. This type of failure can often be mistaken as a lack of lubrication or contaminated oil.
  • Carbon build-up in the turbine side piston ring groove caused by the increased exhaust gas temperatures.
  • Oil leaks into the compressor housing can be seen as a consequence of exhaust gas forcing its way into the CHRA from the turbine side and forcing oil through the oil seal on the compressor side.
  • A blocked DPF can force exhaust gas through the smallest of gaps, including the clearances in the bearing housing VNT lever arm and turbine housing waste gate mechanisms. If this occurs, carbon build up in these mechanisms can restrict movement of the levers affecting performance of the turbo. In some cases soot build up can be seen on the back face of the seal plate where the exhaust gas has been forced through.
  • Turbine wheel failure through high cycle fatigue (HCF) caused by temperature increase.

How can you prevent these failures from occurring?

As a starting point, 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 may experience turbo lag or over boost of the turbo.

To help prevent turbo failure caused by DPFs:

  • Determine whether the DPF is blocked.
  • Contact a DPF specialist for advice.
  • Replace the DPF with a high quality replacement – lower cost DPF’s will often not operate as efficiently as the original. This can replicate the environment of a blocked DPF.
  • If the DPF is blocked, always replace the turbocharger core assembly to prevent possible oil leaks.
  • Check the actuator achieves its full range of movement, particularly if electronic, as internal components could be worn.

One final consideration, 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.

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“GET YOUR WILDHOOD BACK” at this year’s Manitoba RV Show and discover the latest in the RV camping and leisure industry. Western Turbo and IamDIESEL, The Diesel Service Centre, will be on hand as an exhibitor in booth 50 as the Manitoba RV Show partners with the Winnipeg Golf Expo in downtown Winnipeg’s RBC Convention Centre. Purchase a ticket for the Manitoba RV Show & Sale and for an additional $5.00 you can attend the Winnipeg Golf Expo.

The technicians at The Diesel Service Centre are experts in what it takes to keep your RV in tip top shape for even the longest summer road trips! Whether you’re in need of regular maintenance for your RV, repairs or maintenance of your diesel motorhome, or repair and maintenance of your tow vehicle, we have the expertise you need.

The show begins on Thursday, March 9th at 3:00pm and ends on Sunday, March 12th at 5:00pm. Opening day marks a special event, Salute to Service, from 4-9pm, whereby official members of service receive free admission (I.D. required). Not only that, it’s also Ladies Day, where ladies get in free and pay no admission on Thursday, March 9th, so bring the whole family and come explore your next adventure.

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As part of its continued support of the Ag industry, Western Turbo & Fuel Injection Ltd. will once again be attending Manitoba Ag Days at the Brandon Keystone Centre. This year marks the 40th anniversary of the event and it promises to be the biggest and best ever! You will find us at booth numbers 415 & 416 in the City Square Exhibition Hall.

Manitoba Ag Days is widely known as the largest indoor agricultural show in Canada and attendees can expect to experience the best in agricultural production expertise, technology and equipment. The event attracts exhibitors, visitors, and speakers from all over Canada and North Central United States.

We will be there showcasing the newest engine products, performance modules, Stanadyne fuel additives/conditioners, Reviva remanufactured engines, assorted Racor fuel and oil filters, and our vast fuel shop capabilities.

If you have performance or fuel issues, or are simply looking for more power – we’ve got the solution that will work for you.

Event: Manitoba AgDays
Date: January 17, 18 and 19, 2017
Venue: Brandon Keystone Centre Address: 1 – 1175 – 18th Street, Brandon, Manitoba

Admission and parking are free so be sure to drop by. See you there!

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The Chevy Colorado was named the Motor Trend Truck of the Year® for 2015. Fast forward a year later, and reminiscent of Groundhog Day, the 2016 Chevy Colorado has once again earned the award, but this year there’s a diesel twist.

The 2016 midsize truck model is available with a 181-horsepower, 2.8-litre inline-four Duramax diesel, making it the only truck in its class (along with the GMC Canyon cousin) to offer such an engine.

Some other reasons cited by reviewers for the back-to-back victories include capability, dynamic performance, and overall driver enjoyment. The truck is engineered to drive small and light, feeling more like a crossover than a truck, and resulting in unusually sharp steering and deft handling.

The Duramax 2.8L Turbo-Diesel engine provides an impressive 181 horsepower. It also offers torque of 369lb/ft, towing capacity of 7,700lbs, and fuel economy of 22 city/31 highway; each rating representing the Best-In-Class.

The cabin of the Duramax is very quiet thanks to added acoustic damping in the dash and engine cover, and a trick piece of engineering that cancels out the engine’s torsional vibrations.

Dubbed “immensely versatile”, the new Duramax delivers best-in-class fuel economy, superb drivability, and superior towing and payload capacity. Definitely worthy of the Motor Trend truck of the Year title two years running!

Click here to learn more about the 2016 Colorado 2.8L Duramax Turbo-Diesel.

Winnipeg’s premiere diesel centre is Western Turbo and the Diesel Service Centre at IamDIESEL. Whether you need parts, service, or regular maintenance to your diesel vehicle, or just want advice about a new truck, visit us today!

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Representing the first complete redesign of the Titan since its 2005 inception, the 2016 Nissan Titan® XD Crew Cab is the first in the lineup to feature a 5.0L V8 Cummins® Turbo Diesel engine, providing massive torque, impressive efficiency, and legendary Cummins® reliability.

Canadian market research conducted by Nissan revealed that 7,000 owners of half-ton pickup trucks feel they need a slightly bigger truck for towing, while 7,000 owners of ¾-ton trucks believe they have too much truck for their average load. The redesigned Titan falls in between these two main categories in terms of payload, towing capacities and price.

The Titan® XD has sufficient weight and power, plus heavy duty brakes, to make pulling a heavier trailer almost effortless. It also boasts a removable gooseneck hitch, hydraulic cab mounts, a fully boxed ladder frame with military-grade steel, and an Aisin® 6-speed transmission.

All of these features combine to offer heavy towing capacity with better fuel economy and a more comfortable ride than the average ¾-ton.

Click here to download specifications and build your own Nissan Titan®.

Winnipeg’s premiere diesel centre is Western Turbo and the Diesel Service Centre at IamDIESEL. Whether you need parts, service, or regular maintenance to your diesel vehicle, or just want advice about a new truck, visit us today!

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“GO & GET EXPLORING!” at this year’s Manitoba RV Show and discover the latest in the RV camping and leisure industry. Western Turbo and IamDIESEL, The Diesel Service Centre, will be on hand as an exhibitor as the Manitoba RV Show partners with the Winnipeg Golf Expo in the newly-renovated RBC Convention Centre in downtown Winnipeg. Two shows for the price of one!

The technicians at The Diesel Service Centre are experts in what it takes to keep your RV in tip top shape for even the longest summer road trips! Whether you’re in need of regular maintenance for your RV, repairs or maintenance of your diesel motorhome, or repair and maintenance of your tow vehicle, we have the expertise you need.

The show begins on Thursday, March 10th at 3:00pm and ends on Sunday, March 13th at 5:00pm. Not only that, but ladies get in free and pay no admission all day on Thursday, March 10th, so bring the whole family and come explore your next adventure.

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At Western Turbo, we pride ourselves on our ability to provide a wide selection of the best names in OEM and aftermarket parts for your diesel vehicle. We’re happy to announce some new offerings from Parker Racor, one of the top names in fuel filtration technology. Among the whole host of products they offer, we’re especially pleased to offer the following three items, Parker Racor’s top picks.

Pick #1
PFF54529 Fuel Filter Water Separator for HD Ram Truck
The Ram HD trucks with the Cummins 6.7 Diesel are very popular, and the availability of a replacement filter from the OEM supplier sure makes a lot of our customers happy. This is an element for the frame-mounted filter under the cab on the 2014 Ram HD.

Pick #2
PFF33286 Fuel Filter Element Kit for the Navistar 6.4L MaxxForce Engine
This kit is a top seller, and includes both primary and secondary fuel filter elements for a variety of applications that use the MaxxForce 7 engine.

Pick #3
PFL33264 Engine Lube Oil Element for Navistar Engines
Another popular kit, this part is the OEM engine lube oil replacement element for Navistar engines. It fits Navistar MaxxForce 7 6.4L engines in four-wheel drive applications.

Parker Racor is pleased to make these parts available via Western Turbo, because we service more diesels than anyone else locally, and everyone deserves the quality of an OEM part. When it comes to filtration equipment for your diesel vehicle, there’s great wisdom to be had in keeping it real.

For repairs to all of your diesel equipment, come to Western Turbo. Our facility is located at 325 Eagle Drive. Contact us online or by telephone (204) 632-1366 or toll-free at (800) 665-7556.

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For years, Volkswagen was hailed as the last great champion of diesel technology for passenger cars. While the percentage of diesel cars on the road here in North America is relatively low, in Europe they represent almost half of the vehicles on the road.

VW coined the phrase “Clean Diesel”, and had that small part of the market here in North America cornered. Relatively few but fervent, millions of customers went to dealerships to see what the fuss was about. Volkswagen’s TDI (Turbocharged Direct Injection) power plants in passenger cars like the Jetta, Passat, and even the retro-styled New Beetle, as well as the Audi A3, were making impressive mileage numbers while complying with North America’s toughest emission laws, even in notoriously strict jurisdictions like California.

Combining the excellent performance, mileage, and longevity of diesel engines, Volkswagen was becoming the brand of choice for very discerning customers on this side of the Atlantic.

The problem was that they were cheating. They could not achieve the mileage and performance demanded of them and still maintain acceptable emissions, particularly in the two gases that comprise the oxides of nitrogen (Nox), nitric oxide and nitrogen dioxide. In order to maintain the performance that customers wanted, Volkswagen included some devious software in their vehicles that could detect when they were being tested, and adjust the engine’s performance to ensure that the vehicle emissions are lowered so that the car passed the test.

When finally detected by the California Air Resources Board, Volkswagen at first denied that there was any shenanigans committed on their part, but when the Board threatened not to approve any cars for 2016, the company came clean (at least about the software).

In the end, the company is facing countless lawsuits in over 12 countries, and is on the hook to fix millions of cars. Consumers have lost faith in the automaker, and what’s worse, they’re calling the effectiveness and efficiency of the diesel engine into question.

At Western Turbo, we remain committed to diesel engines, in all vehicles. If you’ve got concerns about your vehicle’s engine, emissions equipment, or anything else, come to us. Our facility is located at 325 Eagle Drive. Contact us online or by telephone toll-free at (800) 665-7556.

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As part of its continued support of the Ag industry, Western Turbo will once again be attending Manitoba Ag Days at the Brandon Keystone Centre. Along with Western Diesel, our western Manitoba Brandon (Bosch) Service Dealer, you can find us at Booth 415 in the City Square Exhibition Hall.

Manitoba Ag Days is widely known as the largest indoor agricultural show in Canada and attendees can expect to experience the best in agricultural production expertise, technology and equipment. The event attracts exhibitors and spectators from all over Canada and North Central United States.

We will be there showcasing the newest engine products, performance modules, Stanadyne fuel additives/conditioners, Reviva remanufactured engines, assorted Racor fuel and oil filters, and our vast fuel shop capabilities.

If you have performance or fuel issues, or are simply looking for more power – we’ve got the solution that will work for you.

Event: Manitoba AgDays
Date: January 19, 20 and 21, 2016
Venue: Brandon Keystone Centre Address: 1 – 1175 – 18th Street, Brandon, Manitoba

Admission and parking are free so be sure to drop by. See you there!

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