6.7 Powerstroke Years to Avoid: Insights on Reliability Concerns

When shopping for a used truck with a 6.7 Powerstroke engine, potential buyers should be aware of certain model years that have been noted for their reliability issues. The 6.7 Powerstroke engines, introduced by Ford in 2011, have evolved across several generations, with the first generation—spanning from 2011 to 2014—marked by a number of concerns that could affect long-term satisfaction and performance.

The first generation Powerstroke engines are particularly notorious for various maintenance issues, such as faulty exhaust gas temperature (EGT) sensors, failing injection pumps, and EGR cooler clogs. Owners have also encountered problems with broken exhaust valves, radiator coolant leaks, and damaged turbochargers, leading to costly repairs.

In contrast, the subsequent second generation (2015-2016) and third generation models, starting from 2017 onwards, tend to have fewer reported issues and are generally considered to be more reliable. As such, they may command a premium in the used market, but offer peace of mind for those seeking the benefits of the 6.7 Powerstroke without the early generation’s pitfalls.

Identifying Problematic 6.7 Powerstroke Model Years

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The Powerstroke 6.7 engine, known also as the Scorpion, has undergone various changes and faced several issues since its introduction. It is vital for potential buyers and owners to understand which model years to steer clear of and the common problems associated with them.

Early Model Challenges

The first generation of the 6.7 Powerstroke, encompassing the years 2011-2014, introduced significant advancements but also arrived with notable concerns. These early models encountered several issues such as turbocharger problems, fuel system complications, and coolant leaks.

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Specific Years to Avoid

Within this early era, the 2011 and 2012 model years are particularly notorious for having injection pump failures and problematic EGR coolers. The 2011 model year faced turbocharger issues due to ceramic ball bearings, which could lead to overheating and potential engine damage.

Improvements and Upgrades

The Powerstroke has seen continuous updates to rectify past deficiencies. Post-2014 models, specifically those made after 2015, received improvements in areas like the CP4.2 injection pump and turbocharger design, aiming to enhance reliability and performance.

6.7 Powerstroke Generational Changes

The second and third generations of the 6.7L Powerstroke marked improvements in the fuel system and engine components. These newer generations aimed to address the coolant leak and EGR cooler issues troubling the first-generation engines.

Technical Specifications and Common Issues

Despite its robust design, the 6.7 Powerstroke is not devoid of challenges. The first-generation models had a higher incidence of cylinder head failures and issues with glow plugs, turbocharger failure, and radiator leaks, which could lead to stalling and overheating.

Maintenance and Longevity Tips

For maintenance and longevity of the Powerstroke 6.7, it’s crucial to ensure regular oil changes, use of high-quality fuel, and adherence to scheduled service intervals. A well-maintained 6.7L engine can offer significant mileage without major issues, although the 2011-2014 models demand closer attention.


In assessing the 6.7 Powerstroke, it is evident that specific model years should be approached with caution. The early models produced between 2011 and 2014 have been marked by a higher incidence of issues. These Ford engines in the specified timeframe have encountered concerns such as coolant leaks, faulty exhaust gas temperature (EGT) sensors, EGR cooler clogs, and turbocharger problems.

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It is pertinent to highlight that the 6.7 Powerstroke is a robust diesel engine, revered for its performance and durability in Ford’s heavy-duty trucks. Although these complications may seem daunting, they are not indicative of the overall quality of Ford’s Powerstroke engines across all model years. The noted problems are mostly associated with the powertrain control module (PCM) and materials that were not fully adapted to the later introduction of ultra-low sulfur diesel fuel.

Buyers considering a 6.7 Powerstroke should be diligent in researching specific generations and model years. They should explore the options following the 2014 models, as improvements have been implemented to enhance reliability and address the initial shortcomings.

In summary, prospective owners should:

  • Avoid: 2011-2014 model years.
  • Consider: Later models for enhanced material compatibility and updated PCM.
  • Research: Specific model year issues and revisions.

The decision-making process must be informed by recognizing the Powerstroke’s past challenges to ensure a reliable and satisfactory ownership experience.