Introduction
This tutorial explains how to replace the 4 spark plugs on Ford Fiesta V 1.3i Petrol.
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The 4 spark plugs are located towards the rear of the engine block to the left of the ignition coil.
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To remove the 4 spark plugs, I recommend doing them one by one, which avoids reversing the cables and limits the introduction of impurities into each cylinder.
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Allow the engine to cool before any intervention to avoid the risk of burns and for safety wear gloves.
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Disconnect the spark plug wire by pulling on the cap, not on the wire which could damage it.
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Loosen the spark plug using a ratchet wrench with extension and a 16mm special spark plug socket. Since access is difficult, start by inserting the extension with the socket and then put the ratchet wrench in place.
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Carefully remove the spark plug from the well using the special spark plug socket which holds it in place.
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Blow a jet of air inside the well using a blower to remove any deposits in the cylinder.
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Check that the new spark plug matches the old one in terms of thread diameter, length and electrode spacing according to the manufacturer's instructions. Here the spark plugs have 4 electrodes, thus providing a more powerful spark.
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Place the new spark plug in the 16mm socket to make it easier to fit and screw it in by hand, then finish tightening moderately with the wrench.
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If you have a torque wrench, you can tighten it to the 15Nm torque recommended by Ford.
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Reconnect the high voltage wire, making sure to clip it securely.
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Do the same for the other 3 spark plugs. Then start the engine to make sure everything is connected properly.
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