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James, Ford Technician
Category: Ford
Satisfied Customers: 3630
Experience:  Ford Senior Master Tech, Ford gas and diesel expert, ASE Certified
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I have a 2008 f250 6.4L that has developed a knocking or

Customer Question

i have a 2008 f250 6.4L that has developed a knocking or ticking noise that was not there prior. I assume I have an injector that is not working.
Submitted: 1 year ago.
Category: Ford
Expert:  James replied 1 year ago.

Phelps, is the engine running rough at all?

Customer: replied 1 year ago.
No. I have lost no power and there is no excessive smoke.
Expert:  James replied 1 year ago.

With no smoke and not running rough an injector can be hard to diagnose. I would have a Ford scan tool or something very similar hooked up. They can monitor injector fuel trims and let you know if one or more is bad.