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How to Change Clio Glow Plugs

Updated July 19, 2017

In 1998 the French car company Renault released the first of its diesel engines. The first model was the 1.5-litre diesel engine and the second was the 1.9-litre diesel engine. Both engines use diesel fuel and of course require glow plugs to heat up the diesel fuel. Glow plugs work by heating up the air and fuel inside the cylinder and causing it to explode. This explosion moves the pistons and keeps the engine running. If something happens to the glow plugs, it is easy to understand that the engine will not run well, if at all. Fortunately, replacing the glow plugs requires just a few tools and under an hour of your time.

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  1. Open and secure the bonnet of your Clio.

  2. Look at the centre of the engine compartment. Here you should see the engine block.

  3. Examine the right and left side of the engine block. Depending on the model of the engine, the glow plugs may be either lined up on each side of the engine or on the right-hand side of the engine. Look for silver, pencil-shaped parts with wires connecting them to the engine.

  4. Remove the wire that connects the glow plug to the engine. This is called the connection wire and should come off very easily just by pulling it with your hands.

  5. Place your socket wrench over the first glow plug you would like to remove. Start with a 9mm socket and work your way up if that is too small.

  6. Turn your socket wrench in a counterclockwise motion to loosen the glow plug.

  7. Remove the glow plug with your hand by pulling it out of the engine once it is loose enough.

  8. Slide your new glow plug into the empty glow plug channel. Make sure that the glow plug does not feel crooked, as this is a sign that the threads are getting crossed.

  9. Tighten the glow plug with your socket wrench by turning it in a clockwise motion.

  10. Repeat theses steps for the rest of the glow plugs.

  11. Replace the connection wire by pressing it back into the slot you removed it from.

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Things You'll Need

  • Deep socket wrench set
  • New glow plugs

About the Author

Bryan Cowing

Bryan Cowing starting writing in 2002 for a local newspaper. A passionate bodybuilder and motorcycle enthusiast, he often finds opportunities to write about these topics to help share knowledge and expel myths. A co-owner of a gym in the Middle East, he assists clients with workouts and encourages them with the appropriate knowledge. Cowing holds a master's degree in English.

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