Valve Body Cleaning And Inspection
WARNING: This page is about a different car, the 2020 Jeep Renegade. However, it is still accessible from the selected car via links, so may be relevant.
Clean the valve body components with a suitable clean solvent. The valve body components can be blown dry with compressed regulated 344 kPa (50 psi) shop air.
Inspect the valve components and bores for excessive scoring, porosity, warping or other damage that may cause the valves to bind or leak excessively. If damage is evident the complete valve body must be replaced.