F 350 4WD Pickup V8-7.3L DSL Turbo VIN F (1994)
Glow Plug: Description and Operation
Glow Plugs
PURPOSE
The glow plugs are used to warm up the cylinders to improve cold engine starting.
OPERATION
Battery power, controlled by the glow plug relay and the Powertrain Control Module (PCM), is applied to the glow plugs when necessary.
CONSTRUCTION
The glow plugs are one piece, and are not repairable. They must be replaced when defective.
