Check the PCSV
- Ignition "OFF".
- Disconnect PCSV and Vacuum Hose.
- Apply vacuum on PCSV with Hand Vacuum Gauge.
- Is the PCSV keeping the Vacuum?
YES
- Go to "Check Injector " as below.
NO
- Substitute with a known-good PCSV and check for proper operation.
If the problem is corrected, replace PCSV and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.