Distributor Vacuum Spark Delay Valve: Delay Valve Trapped Spark (DV-TS)
Vacuum Spark Delay Valve: Description and Operation
Delay Valve Trapped Spark (DV-TS)
The DV-TS is used to help control exhaust emissions by delaying vacuum advance during some acceleration modes and is located in the vacuum line
between the carburetor and the distributor advance unit.