Operation and maintenance manual
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HydraulicColdStartInjectionAdvance(RotaryAutomotivePumpsOnly)
A hydraulic cold start injection advance (KSB) device is used on 1988 and later certified engines for
white smoke control during cold starting.
When the engine is cold, the KSB cauese the injection timing mechanism to be fully advanced at low
speeds. When the engine reaches normal operating temperature, the KSB is deactivated and injection
timing is then advanced proportionally to increased engine speed.
Deactivation of the KSB is controlled by a temperature sensor switch located in the engine air intake
manifold. A wiring
Deactivation of the KSB is controlled by a temperature sensor switch located in the engine air intake
manifold. A wiring harness connects the KSB and temperature switch. If the wiring is disconnected, the
KSB remains activated and the injection timing is fully advanced.