Assuming you *meant* 4 spark plugs, the difficulty depends on several factors:
* Your mechanical aptitude: If you're comfortable working on cars, it's a relatively straightforward job. If you're a complete beginner, it might be challenging.
* Accessibility of the plugs: Some plugs are easier to reach than others. On a Ranger, some might be nestled deep within the engine bay, requiring the use of specialized tools or extensions.
* Condition of the plugs and surrounding components: Rusty or seized plugs can be very difficult to remove. If the wires are brittle or difficult to disconnect, that adds to the complexity.
* Tools: Having the right tools (socket wrench with the correct size, spark plug socket, extension, possibly a ratchet, and possibly a wire brush for cleaning the plug wells) is crucial.
Overall: For someone with basic mechanical skills and the right tools, changing 4 spark plugs on a 1993 Ranger is a moderately easy job, likely taking 30-60 minutes. For a beginner, it could take longer and might be more frustrating. There are plenty of online resources (YouTube videos, repair manuals) that can guide you through the process.
If you are unsure about any aspect of the job, it's always best to seek help from a more experienced mechanic. Attempting a repair you're not comfortable with can lead to damage.
