Inspection of Glow Plugs
In order to check the heating coil or element, measure its resistance as shown in the diagrams (right) and based on your findings if;
- Resistance value ∞ : The heating coil/element is broken
- Resistance value of a metal glow plug is less than 5 ohm: The heating coil is in good condition.
- Resistance value of a ceramic glow plug is less than 1 ohm: The heating element is in good condition.
![glowplug-analysis](https://www.ngk.com.au/wp-content/uploads/2016/11/GlowPlug-Analysis.png)
Inspection of Glow Plugs
In order to check the heating coil or element, measure its resistance as shown in the diagrams (right) and based on your findings if;
Resistance value
∞ : The heating coil/element is broken Resistance value of a metal glow plug is less than 5 ohm: The heating coil is in good condition. Resistance value of a ceramic glow plug is less than 1 ohm: The heating element is in good condition.
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