| Fig. 1: Schematic of the PCV system used on 1986 carbureted
trucks
|
| Fig. 2: To remove the PCV valve, simply pull it free
of the grommet and then remove the hose attached to the other end
|
The Positive Crankcase Ventilation (PCV) valve should be inspected for blockage periodically. On trucks through 1984, it is located in a special fitting in the intake manifold, just below the carburetor. On 1986 trucks, it is located in the valve cover, connected to the intake manifold by a vacuum hose.
