Removal (Aerostar & Ranger)
- Disconnect negative battery cable. Remove fresh air hose from air cleaner. Mark and remove spark plug wires from spark plugs. Remove spark plug wire separators from valve cover studs. For left valve cover, remove upper intake manifold. See INTAKE MANIFOLD .
- Remove PCV valve. Disconnect injector wiring harness bracket from left valve cover studs. Disconnect engine wiring harness connectors from right valve cover.
- Disconnect injector wiring harness bracket from right valve cover studs. Disconnect breather hose. Remove valve cover retaining bolts and studs.
- Carefully slide a thin knife between cylinder head and valve cover. Cut silicone sealer; avoid cutting integral gasket. Remove valve cover(s).