Where is fuel filter on 1991 toyota truck with EFI?

On a 1991 Toyota truck with EFI (Electronic Fuel Injection), the fuel filter is typically located along the fuel line, underneath the vehicle. It is often found mounted to the frame rail on the driver's side, near the fuel tank. You may need to lift the truck for better access, as it can be somewhat tucked away. Always ensure to relieve fuel system pressure before attempting to replace the filter.