Find out the first signs of wear on ignition cables

NGK recommends a number of actions for the driver to prevent any problems with these parts, that ensure the proper operation of the engine

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São Paulo, janeiro de 2023 - Ignition cables have the important function of driving the electric current from the coil to the spark plugs. Among the possible flaws of this component is the deficiency of electrical insulation, which allows high voltage to escape through the cables and promote failure in the ignition system. To prevent damage from being intensified on the, and NGK, Japanese multinational ignition systems specialist, points out the main signs of wear on the ignition cables. check out:

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• Increased fuel consumption, that, if it is not burned in the engine, may compromise components such as catalyst - which has a very high cost;
• Expansion of pollutant emission levels;
• Engine failure;
• Difficulty starting the engine;
• Irregular slow gait;
• Speed resumption failed.

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Faced with the problems that drivers may face, specialist Hiromori Mori, NGK technical consultant, indicates essential procedures to prevent possible wear on the cables:

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• Realization of electrical insulation test to check if your insulation has been compromised;
• Measurement of electrical resistance of cables, since the high resistance makes it difficult to pass electric current;
• Verification of signals from flash-over - electric current passage between the cable and the candles or between the cable and the ignition coil that generates visible marks on the ignition cables;
• Finding of the integrity of the rubber of the cable terminals, because dryness or sagging rubber makes electrical insulation difficult, while the dry and rigid wires suggest dryness of the ignition cable material.

According to Mori, the use of the vehicle in heavy traffic conditions, where there is greater heating of the engine safe region, compromises the life of ignition cables. According to the expert, engine oil leaks, when they come into contact with the cables, cause a degradation of the material that produces the cables. Já o uso de produtos químicos para lavagem do motor ocasiona desgaste dos cabos de ignição por agressão química.

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"The best way to avoid the problem in ignition cables is preventive maintenance. With the heating caused by the use of the vehicle, the rubber material of the ignition cables is resqueesing. That is why, é recomendável a troca dos cabos de ignição a cada três anos ou 60 mil quilômetros - what happens first. In this way, cable integrity and proper operation of the ignition system are maintained", Mori explains.

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The NGK consultant advises that the process of replacing ignition cables be carried out by a professional specialized in automotive repair by demanding a correct installation sequence. "Inversion of this order or the use of incorrect tools may cause ignition failures, in addition to damaging the new cables", alert Mori.