Where is number 4 spark plug on the 4.6 liter Triton engine?

The firing order for a 4.6L Triton V8 engine is typically 1-5-4-8-6-3-7-2. Therefore, to find cylinder #4, you need to trace the spark plug wire from the distributor (or coil pack if it's a coil-on-plug system) that corresponds to that firing order position. It will be on the passenger side of the engine, towards the rear.

However, you can't get a precise location without knowing the year and specific configuration of your 4.6L Triton. The location *relative* to other components might vary slightly between models and years. Always consult your vehicle's repair manual or a diagram specific to your engine for the most accurate location. Using the wrong plug or damaging a component during installation can cause serious engine damage.