Vacuum Routing Diagrams — Ford F-250 1987-1991

Technical Reference

Member-uploaded diagrams & documents for this generation. AI-classified; community-verified where badged.

Vacuum Routing

• Ford 5.8L Vacuum Hose Routing Diagram - Emissions Decal MFM05.8BSA6
  This document is a photograph of a Ford underhood vacuum hose routing / emissions decal for a 5.8L engine with multi-port fuel injection (labeled "5.8L RDX/AIR/HO2S/EGR/MPI" with calibration code MFM05.8BSA6). The…