What years were the 5.4 Triton bad?

What are some known issues associated with specific model years of the 5.4 Ford Triton engine? Currently, I am researching potential reliability issues with this engine and would like to learn about any problematic years to avoid when considering a vehicle equipped with the 5.4 Triton.


Found in later model years, particularly in vehicles produced from the mid-2000s to early 2010s, cam phaser failure can lead to timing chain issues, engine noise, and reduced performance.


The design of the spark plug threads can lead to them blowing out of the cylinder head, causing misfires and potential engine damage.

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Certain model years may experience coolant leaks from components such as the intake manifold or water pump.