Del Sol L4-1.5L SOHC (1993)
Positive Crankcase Ventilation Valve: Testing and Inspection
1. Check the crankcase ventilation hoses and connections for leaks and clogging.
PCV Testing
2. At idle, make sure there is a clicking sound from the PCV valve when you lightly pinch the PCV hose with your fingers or pliers.
If no clicking sound is heard, replace the PCV valve and recheck.
