Possible Problems:
* Air Leaks: This is the most common problem. Leaks can occur in the air springs (bellows), air lines (hoses), compressor, or even valve block. Pinpointing the leak requires careful inspection and often pressure testing.
* Failed Air Springs (Bellows): The air springs themselves can degrade and fail over time due to age, wear, and exposure to the elements. They're usually the most expensive component to replace.
* Compressor Failure: The air compressor pumps air into the system. Failure can manifest as slow inflation or no inflation at all.
* Valve Block Issues: The valve block controls the flow of air to the individual air springs. Problems here can lead to uneven suspension or inability to raise/lower.
* Air Line Leaks/Breaks: The air lines connecting the compressor, valve block, and air springs can crack or become disconnected.
Repair Steps (General Outline – Requires Specialized Knowledge and Tools):
1. Diagnosis: This is crucial. You need to identify the source of the problem. This often involves using a pressure gauge to check for leaks in the system and testing the compressor's functionality. A properly equipped auto shop with experience in air suspension systems will have the tools necessary for this.
2. Leak Detection: This involves systematically checking all components – air springs, lines, and connections – for leaks. Soap and water solution can help visualize leaks. A specialized leak detection system may be required.
3. Component Replacement: Depending on the diagnosis, you might need to replace:
* Air Springs (Bellows): These are usually the most expensive and difficult part to replace. Specialized tools are needed for proper installation.
* Air Lines/Hoses: Replacement is relatively straightforward once the leaks are identified.
* Compressor: Replacement requires electrical and mechanical expertise.
* Valve Block: This is often a complex and expensive replacement requiring specialized knowledge.
4. System Recharge: Once repairs are complete, the system needs to be recharged with the correct type of air suspension fluid (usually nitrogen). A proper recharge is important for optimal system performance.
5. Testing: After repairs, the system must be tested to ensure proper function and that no further leaks are present.
Important Considerations:
* Parts Sourcing: Finding replacement parts for a 35-year-old car can be challenging. You might need to source parts from specialized suppliers or salvage yards.
* Specialized Tools: Repairing air suspension systems requires specialized tools, including air pressure gauges, leak detection equipment, and potentially spring compressors.
* Expertise: Unless you have significant experience working with air suspension systems, attempting this repair yourself is highly discouraged. The complexity and potential for further damage make professional repair the safest and most cost-effective option in the long run.
Recommendation:
Take your 1988 Lincoln Mark VII to a qualified mechanic with experience in repairing air suspension systems. They have the tools, knowledge, and parts to diagnose and repair the problem correctly and efficiently. The cost of a professional repair will likely be less than the cost of parts, tools, and potential mistakes if you attempt it yourself.
