* Limited Access: The rear spark plug is tucked away in a very confined space. There's simply not much room to maneuver your hand and a socket wrench.
* Interfering Components: Various hoses, wiring harnesses, and possibly the intake manifold might be obstructing access.
* Angle of Approach: The angle required to reach the plug is often awkward, requiring you to work at an uncomfortable position.
To improve your chances of success:
* Use a Spark Plug Socket with a swivel or universal joint: This will allow you to work at a more favorable angle. A flexible extension might also help.
* Use a thin-walled spark plug socket: This will give you a slightly better chance of fitting in the cramped space. A magnetic spark plug socket is also helpful for retrieving the plug.
* Remove Obstructions (carefully!): If possible, and only if you're comfortable doing so, carefully move or temporarily disconnect any hoses or wires that are directly interfering. *Take pictures beforehand so you remember how to put everything back correctly!*
* Use a ratchet with a short handle: A short handle gives you more control in the limited space.
* Work from different angles: Try accessing the plug from different angles around the engine.
* Mirror or Inspection Camera: A small mirror or a flexible inspection camera can help you see the plug and its orientation before attempting to remove or install it.
* Consider Professional Help: If you're still struggling, it might be worthwhile to take your Aerostar to a mechanic. They have the experience and specialized tools to handle this type of job efficiently.
Important Safety Note: Always disconnect the negative terminal of your battery before working on your ignition system to prevent accidental short circuits.
If you provide more details about what specifically is making it difficult (e.g., a specific part is blocking access), I might be able to offer more targeted advice.
