K 3500 Truck 4WD V8-393 6.5L DSL Turbo (1993)
Glow Plug: Description and Operation
Glow Plug Location
PURPOSE
Glow plugs provide a source of heat in addition to heat provided by compression, to aid in starting.
OPERATION
Glow plugs are 6 volts heaters (operated at 12 volts) that turn on when the engine control switch is turned to the run position prior to starting the
engine. They remain pulsing for a short time after starting, then automatically turn off.
LOCATION
Glow plugs are located in the cylinder head and protrude into the precombustion chamber.
