What is the firing order of spark plugs on 5.4 ford engine?

The firing order for a Ford 5.4L Triton V8 engine depends on the specific year and whether it's a 2-valve or 3-valve version. There isn't a single firing order for all 5.4L engines.

You must find the firing order on a sticker under the hood, in your owner's manual, or look it up using your engine's specific year and model. Searching online using "[your year] Ford [your model] 5.4L firing order" will usually provide the correct information.

Do not rely on a generic firing order found online without verifying it matches your specific engine. Using the incorrect firing order can damage your engine.