Common 6.4L Power Stroke Issues

In 2008, the 6.4L Powerstroke engine was introduced in Ford vehicles. Even though it was an improvement on the previous 6.0L engine, certain issues can still arise. By understanding the common issues associated with the vehicle, it is easier to find concerns before buying a 6.4L Powerstroke vehicle.

Radiator Leaks

A common problem that can occur with the 6.4L Powerstroke is that the radiator or the radiator hose may leak. Depending on the location of the leak, there may be signs around the radiator, long the side or by the tow hooks.

White splatter and rust, particularly below or around the radiator, can indicate that there is a leak.

Oil Dilution

Oil dilution refers to the fuel that slips past pistons and gets into the crankcase. Oil dilution can cause a variety of problems, including reduced lubrication throughout the engine and a higher risk of hydro-locking.

Even though oil dilution is a common problem, regular oil changes and maintenance can catch the problem early.

Water in the Fuel

The water separator is a key problem with the 6.4L Powerstroke. Water gets into the fuel, which causes a reaction leaving behind white residue. The residue gradually builds up until it starts to block the drain valve ports. When that happens, the water ultimately mixes with the fuel.

Draining the water by opening the water separator valve can help prevent the water from building up and causing more problems. In general, it is best to drain the water at least once per month.

The 6.4L Powerstroke engine had a few common problems that developed. Even though it was designed to improve on previous models, regular maintenance and management is necessary to keep the engine in good working condition. The issues can vary slightly, so it is important to have the vehicle checked to identify any current concerns.

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