PLUG-GLOW
DESCRIPTION
Glow plugs are used to help start a cold or cool engine . The glow plugs will heat up and glow to heat the combustion chamber of each cylinder. An individual glow plug is used for each cylinder. Each glow plug is threaded into the side of the cylinder head below the cylinder head cover.
OPERATION
The glow plugs are used to preheat the combustion chambers in order to achieve the ignition temperature required for the fuel-air mixture.
The glow plug consists of a housing with a female thread and an interference-fit rod. The heating element is integrated in the glow rod. It consists of a heating winding and a control winding connected in series.
When the glow plug system is switched “ON”, a current of about 30 ampere flows to each glow plug. The heating winding heats the glow plug. The control winding increases its resistance as the temperature rises and limits the current to approximately 15-25 ampere. The glow plug is protected this way from overloads.
REMOVAL
CAUTION: Engine temperature must be at least 90°C (194°F) before removing glow plugs. If cylinder head is already removed, warm cylinder head to 90°C (194°F) before removing glow plugs.
1. Disconnect negative battery cable.
2. Remove engine cover (Refer to 9 - ENGINE - REMOVAL).
3. Disconnect glow plug electrical connector (1).
WARNING: Risk of injury to skin and eyes from handling hot or glowing objects. Wear protective gloves, clothing and eye wear.
4. Remove glow plugs and clean glow plug bay.
INSTALLATION
1. Clean glow plug bay and install glow plug. Tighten glow plugs to 12 N·m (106 lbs. in.).
2. Connect glow plug electrical connector (1).
3. Install engine cover (Refer to 9 - ENGINE - INSTALLATION).
4. Connect negative battery cable.