PCV Valve Inspection

NOTE: Be sure to check that there is no obstruction in PCV valve or its hoses before checking engine idle speed / IAC duty for obstructed PCV valve or hose hampers its accurate checking.

Remove PCV valve referring to PCV VALVE REMOVAL AND INSTALLATION .
Connect PCV valve (1) to PCV hose and plug head cover hole.
Run engine at idle.
Place your finger on the hole of PCV valve (1) to check for vacuum. If there is no vacuum, check for clogged valve. Replace as necessary.

Fig 1: Identifying PCV Valve
Courtesy of SUZUKI OF AMERICA CORP.
After checking vacuum, stop engine and remove PCV valve (1). Shake valve and listen for the rattle of check needle inside the valve. If valve does not rattle, replace valve.

Fig 2: Checking PCV Valve Vacuum
Courtesy of SUZUKI OF AMERICA CORP.
After inspection, remove plug from head cover hole. Then, install PCV valve to head cover hole referring to PCV VALVE REMOVAL AND INSTALLATION , connect PCV valve, PCV hose and clamp securely.