1. The Owner's Manual: Check the owner's manual that came with your vehicle. While not all manuals contain detailed schematics, some may have a basic diagram of the fuel system.
2. The Ford Workshop Manual: This is the most comprehensive resource for finding detailed information about your vehicle. It can be purchased online from various sources like:
* Helms Automotive: https://www.helminc.com/
* Motor Era: https://www.motoreta.com/
* eBay: Search for "1986 Ford F150 Workshop Manual"
3. Ford Parts Websites: Some online parts retailers like FordParts.com may have downloadable schematics for your specific model year. However, these might be more basic diagrams.
4. Online Forums and Communities: Forums dedicated to classic Ford trucks, like the Ford-trucks.com website, can be helpful for finding information. You can post a question about the fuel line schematic and someone with experience may be able to point you in the right direction.
5. Service Manuals: Look for service manuals specific to the 1986 Ford F150 5.0L Fuel Injection system. These are sometimes available at auto parts stores or online.
Remember:
* Use caution when working on fuel lines. Fuel is highly flammable, and you should take all necessary precautions.
* Refer to the specific model year and engine configuration. While some aspects of the fuel system may be similar across models, small differences can exist.
By searching these resources, you should be able to locate the fuel line schematic you need to repair or understand your 1986 Ford F150's fuel system.