Spark Delay Timing Control System: Description: B2000

This system consists of delay valve which reduces vacuum advance during acceleration mode. Calif. models are also equipped with a water thermo valve which prevents advance until engine coolant temperature is above 122°F (50°C).

Fig 1: Schematic of Mazda 626 and B2000 Spark Delay Timing Control System

Courtesy of MAZDA MOTORS CORP.

Fig 2: Schematic of Mazda GLC Spark Delay Timing Control System

Courtesy of MAZDA MOTORS CORP.