| Various preheating glow plugs |
| Two types of glow plugs are installed in 2.0 l 4V 4 cylinder TDI engines |
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| Metallic preheating glow plugs |
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| NGK Ceramic preheating glow plugs |
Note | The NGK Ceramic preheating glow plugs have a “white safety catch, or a silver painted safety catch” as a colour code. |
| The following points should be taken into acount with ceramic glow plugs: |
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| The ceramic glow plugs are very delicate due to the special properties of its materials and must be handled with special care when mounting as well as dismounting them. |
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| Transport and store only with the proper original boxing or with padded plastic individual wrapping. |
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| Do not unpack the ceramic plugs until the moment you will use them. |
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| The ceramic preheating glow plugs are sensitive to bumps and torsion. For this do not use glow plugs that have fallen, even from an altitude of some 2 cm, even if no damage is detected (like fine cracks). |
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| Replace the ceramic preheating glow plugs when you doubt its condition. |
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| Broken or damaged ceramic glow plugs can cause damage to the engine. |
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| If the plug plug breaks remove from the fuel chamber all the fragments before switching the ignition on, otherwise, the engine will fail due to piston seizing. |
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| The ceramic preheating glow plugs should not be dismounted for the compression test. |
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