What Years Are Ford Diesel Engines To Avoid And Why?

Do you know what years are ford diesel engines to avoid? Well, it’s the ford super duty 6.0L Powerstroke from 2003-2007 and the 6.7L Powerstroke from 2011-2014.

The ford diesel engines are known as Powerstroke engines. These 6L and 6.7L is diesel engines had some significant issues. Thus buyer needs to be aware of buying these Ford SuperDuty diesel trucks.

But why you should avoid them is the primary concern. Don’t worry at all! We will discuss all the detailed information about the worst diesel engines that you need to avoid.

So without any further talk, let’s jump into the main topic.

What Years Are Ford Diesel Engines To Avoid

The 6.0L Powerstroke from 2003 to 2007 ford SuperDuty diesel truck has had significant issues from the very beginning. Most of them originated from the manufacturer’s factory. That is why it is always better to avoid these year models of Ford diesel engine trucks.

However, one of the main reasons behind these problems that worked as a contributor was the EGR emission system. The 6.0’s are commonly known as six leakers. Problems like TTY head studs or head gasket failures, oil cooler, EGR cooler problems, HPOP, FICM failure, and many more.

Similarly, the 6.7L Ford SuperDuty from 2011 to 2014 is another ford diesel engines to avoid. EGR failures, turbo failure, and emission systems adding multiple failure points are common issues of this Powerstroke engine. In addition, this engine also has injection pump failure, ETG sensor failure, cooler clogging, etc. issues.

Ford Diesel Engine Problems

Now that you know what ford diesel engines to avoid, you should know why to do so. Some common diesel engine problems in Ford trucks are illustrated below-

Fuel injection control module or FICM failure

The FICM is located beside the diesel engine. Sometimes the control module can get overheated or fail due to excessive vibration or heat from the engine. The FICM failure can cause no start, rough start, or running condition. 

Also Read: Ford Explorer Terrain Management System Fault Reasons With Easy Fix

Besides, the capacitors o the fuel injection control module can get damaged by the negative impact of cold weather, drowning excess voltage. However, you can locate a faulty control module using a scan tool. Also, look at the PID data while checking or scanning the fuel injection control module.

Head Gasket Failures And Torque To Yield Head Studs

The torque to yield or TTY head studs are rigged with the 6.0L ford diesel engine. Adding a tuner sometimes can cause the head gasket failure. An auxiliary tuner can increase the cylinder head pressure beyond the torque to yield capability.

However, after removing the TTY from the Powerstroke engine, it becomes unable to be re-used. And you must replace the TTY in the machine right after removing it.

EGR Cooler Crises

The EGR cooling system problem is one of the most common ford diesel engine problems experienced by the owners. The EGR cooler problem mainly arises from the higher temperatures in the oil cooler.

Coolant enters in a small amount when the EGR oil cooler gets clogged. And the clogged cooler is the main culprit behind the potential damage, boiling coolant, and high temperature.

EGR Valve Issues

LIKE THE EGR COOLER, the EGR valve gets clogged due to excess soot. Sometimes the problem can arise because of poor fuel quality.

HPOP Or High-Pressure Oil Pump Failure

The 6.0L diesel engines most commonly have high-pressure oil pumper failure in them. The oil pump is a complete failure in the 6.0L Powerstroke. It also has leakage issues.

You can replace it if the high-pressure oil pump in your diesel engine fails. Moreover, you should also check the HPOP screen while replacing the HPOP.

Frequently Asked Questions (FAQs)

What years did ford have problems with diesel engines?

The ford 2003 to the 2007 year and the ford 2011 to the 2014 year have problems with the diesel engines. The 2003-2007 year model with a 6.0L Powerstroke engine and 2011 to the 2014 year model with 6.7L Powerstroke engine has got some serious issues. Even the parental company of these Powerstroke engines got into legal action.

What years are bad for ford diesel?

2003 to 2007 and the 2011 to 2014 years are bad for Ford diesel engines. The 2003-2007 year model with a 6.0L Powerstroke engine and 2011 to the 2014 year model with 6.7L Powerstroke engine has got some serious issues. The Navistar and Ford company has been legally fighting over it to keep it from worsening.

What is Ford’s most reliable diesel engine?

Ford’s most reliable diesel engine is the 7.3 DI Powerstroke engine. It was in production before placing specific regulations and conditions in the case of diesel engines. The 6.7L Powerstroke engine is also known as the best ford diesel engine.


So that was all about the worst ford engines and what years are ford diesel engines to avoid. Especially 2003 to the 2007 year model of diesel engines are so infamous and poor quality that the Navistar and Ford company got into legal combat. So hopefully, you will keep these facts in mind while buying a PS.

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James Noah

Ah! Driving your King has no twist when you have zero knowledge! Yes, Noah is here with his core experiences about trucks, cars, suvs and atvs. Working as a cheif editor for Automasterx to make you satisfied with solid data driven post.

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