* Accessibility: The engine bay in a Windstar is relatively cramped, making access to the cylinder head bolts and other components challenging.
* Complexity: Removing and reinstalling the cylinder heads requires precision and careful attention to detail. You'll need to disconnect numerous hoses, wires, and components before you can even access the heads. Misalignment or damage to these parts during reassembly can lead to further problems.
* Torque Specifications: Achieving the correct torque on the head bolts is crucial to prevent future head gasket failure. Incorrect torque can warp the heads or cause leaks. You'll need a torque wrench capable of delivering the precise specifications.
* Potential for Damage: There's a significant risk of damaging the cylinder heads, engine block, or other components during the process if not done carefully.
* Special Tools: You'll likely need specialized tools, such as head bolt torque wrench, valve spring compressor, and possibly a cylinder head gasket installation tool.
In short: Unless you have significant mechanical experience, including experience with head gasket replacements on similar engines, you should strongly consider taking it to a professional mechanic. The cost of tools and potential damage from a failed DIY attempt can easily outweigh the cost of professional repair. The labor involved is substantial and it’s easy to make a costly mistake.