Yes, both the 6 cylinder and 4 cylinder engines have PCV (Positive Crankcase Ventilation) valves.
http://www.4x4wire.com/toyota/maintenance/tacoma_4runner_30k/maintenancep5.html Link explains where PCV valve is, how to test it !!!!
PCV valve is located on the of the valve cover. There is a hose connecting the valve and the intake manifold. You should not have problems locating it.
4 cylinder does not have pcv valve.
The PCV valve on a 1997 Toyota Avalon is located on top of the engine. It connects the left valve cover with the intake.
On a 2002 Toyota Solara with a 6-cylinder engine, the PCV (Positive Crankcase Ventilation) valve is typically located on the valve cover. You can find it near the rear of the engine, often connected by a rubber hose. To access it easily, you may need to remove any engine covers or components obstructing the view. Always consult the vehicle's service manual for specific details and guidance.
The PCV valve is located on top of the valve cover in the middle.
The PCV valve is usually on top of one of the valve covers.
The PCV valve is located in the valve cover
pcv valves are always located on valve covers (but not all vehicles have pcv valves)
The PCV valve is found in the valve cover on the passenger side.
Where is the PCV valve located on 97 Toyota Camry and how to replace it.Read more: Where_is_the_PCV_valve_located_on_97_Toyota_Camry_and_how_to_replace_it.
The PCV valve on a 1999 Astro should be located on top of the valve cover. It plugs in and can be easily replaced.