If you're considering buying a heavy-duty diesel truck, you've probably already read about the 6.7 Powerstroke engine - Ford's powerful engine built for performance, reliability, and towing power. But what exactly is the 6.7 Powerstroke? How does it compare to other diesel engines on the market?
In this guide, we'll break down the 6.7 Powerstroke's specs and analyze its year-over-year improvements and overall performance. Whether you're engine shopping or comparing engines, this detailed overview will help you understand what makes the 6.7L Powerstroke engine so great.
Overview of the Ford 6.7L Powerstroke Engine
The Powerstroke engine is Ford's brand of diesel engines designed specifically for Super Duty trucks. This series of engines is known for its torque, pulling power and fuel efficiency, especially for heavy-duty applications. The 6.7L Powerstroke is the first version that Ford has fully developed, breaking away from its previous partnership with Navistar International.
Prior to 2011, Ford's diesel engines (6.0L and 6.4L) were produced by Navistar, which had reliability and warranty issues. As a result, Ford turned its development efforts in-house. The 6.7L PowerStroke engine project, codenamed "Scorpion", was developed by Ford itself. It was designed to solve past problems and improve performance.
Key Features of 6.7L Powerstroke Engine
The 6.7L Powerstroke engine features cutting-edge technology and materials for superior performance. Here are its highlights:
- Piston Cooling Jets : Helps reduce cylinder temperatures and extend engine life.
- Glow Plugs : Enables fast cold-weather starts.
- High-Pressure Common Rail Fuel Injectors : Enables up to five injections per combustion cycle for increased efficiency and power.
- Aluminum Cylinder Heads : Helps reduce vehicle weight without sacrificing durability.
- Compacted Graphite Iron (CGI) Engine Block : Stronger and lighter than conventional cast iron blocks.
- Optimized Oil Capacity : Extends oil change intervals - up to 15,000 miles or 1 year.
6.7L Powerstroke Engine Specifications
- Displacement: 6.7L (409 cu in)
- Configuration: V8 with 90-degree bank angle
- Bore and stroke: 3.90 in x 4.25 in (99 mm x 108 mm)
- Compression ratio: 16.2:1
- Fuel system: Common rail direct injection
- Turbocharger: Single turbo (2011-2019); variable geometry or twin turbo (2020 and later)
- Engine weight: Approximately 440 kg
- Maximum towing capacity: 35,000 lbs
- Maximum payload: 7,640 lbs
- Cylinder block material: Vermicular graphite iron
- Cylinder head material: Aluminum alloy
- Emission control: EGR, DPF and SCR system
Evolution of the 6.7L Powerstroke Engine
1. 2011-2014: First Generation
The first version of the 6.7L Powerstroke produced 390 horsepower and a whopping 735 lb-ft of torque. While it set a high standard for diesel engines, early models had reliability issues with the EGR system and the CP4 fuel pump.
2. 2015-2019: Second Generation
Ford made a major update that increased power to 440 horsepower and 925 lb-ft of torque. Key improvements addressed early reliability issues, making these models more reliable in long-term use.
3. 2020 and Beyond: Third Generation
From 2020 onwards, the 6.7L Powerstroke will have 475 horsepower and an astonishing 1,050 lb-ft of torque. The addition of an advanced turbocharging system further improves performance and fuel efficiency.
Emission Control of 6.7L Powerstroke Engine
To meet stringent emission standards, the 6.7L Powerstroke uses several advanced technologies:
- Diesel Particulate Filter (DPF) : Captures and burns soot particles.
- Selective Catalytic Reduction (SCR) : Reduces NOx emissions using Diesel Exhaust Fluid (DEF).
- Exhaust Gas Recirculation (EGR) : Recirculates exhaust gas to lower combustion temperatures and reduce NOx emissions.
- Diesel Oxidation Catalyst (DOC) : Converts harmful exhaust gases into less harmful substances.
While emissions systems are very effective, they may experience the following problems:
EGR Cooler Carbon Deposits (P0401/P0402):
- Regular cleaning;
- Or installation of an EGR Delete Kit can resolve this issue.
NOX Sensor Fault Triggers “Limp Mode”:
- Replacing the faulty sensor is essential to restore performance;
- Or a retrofit DPF Delete Kit can resolve this issue.
DPF Clogged:
- Regular regeneration cycles;
- Cleaning or replacement of the original OE part;
- Retrofitting a DPF Delete Kit can prevent clogging.
Ford 6.7 Powerstroke Engine Reliability and Common Problems
The 6.7L Powerstroke engine is generally reliable, but like any engine, it has some common problems:
CP4 Fuel Pump Failure:
This high-pressure pump can fail, contaminating the entire fuel system and leading to expensive repairs. Many owners upgrade to a CP3 pump for better durability.
Supercharger/Turbocharger Problems:
Older models have wear and carbon deposit issues and may need to be replaced.
Emission System Failures:
Especially in early models, EGR, DPF, and sensor failures are particularly serious. These can cause reduced performance or "limp mode."
Despite these issues, many 6.7L Powerstroke engines have exceeded 250,000 to 350,000 miles when properly maintained, making them one of the most durable options on the market.
FAQs about Ford 6.7 Powerstroke Engine
1. How much oil does a 6.7 Powerstroke take?
The 6.7L PowerStroke engine typically requires 13 quarts of oil (with filter).
2. Is the 6.7 Powerstroke a good engine?
Yes, the 6.7 PowerStroke offers excellent pulling power and torque, with 2020 and later engines making up to 475 horsepower and 1,050 lb-ft of torque. This makes it ideal for heavy-duty hauling and off-road applications.
3. What is the best year for 6.7 PowerStroke?
Models after 2015 (particularly 2017–2019) are widely considered the most consistent in terms of reliability and performance. They address some common issues with earlier versions, such as fuel pump and EGR system failures.
4. When did the 6.7 Powerstroke come out?
The Ford 6.7L PowerStroke was first introduced in 2011.
5. How long will a 6.7 Ppowerstroke last?
With good maintenance, the 6.7 PowerStroke can be expected to have a life of 250,000 to 350,000 miles (about 400,000 to 560,000 kilometers). Many owners report that it is still running well for more than 400,000 kilometers.
6. Who makes the Ford Powerstroke engine?
The original PowerStroke was produced by Navistar International (International Truck Company). But since 2011, Ford has designed and produced the 6.7L PowerStroke engine completely in-house.
7. Which year of 6.7 PowerStroke engines should be avoided?
It is recommended to be cautious with 2011–2014 models. Although powerful, these engines are more prone to EGR cooler, fuel pump and sensor failures, which are more expensive to repair.
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