NGK warns about the presence of iron in fuel

A NGK, World Spark Plug Specialist, found the presence of iron oxide in the fire retardant tip of the spark plugs of vehicles in the states of São Paulo, Paraná, Rio de Janeiro, Minas Gerais and Santa Catarina. After analysis, It was confirmed that the origin of the reddish contaminant is from the fuel, that, when accumulated in the component, causes misfires and, consequently, loss of power. It can also be installed on the oxygen sensors and the catalyst, compromising equipment.

Known to increase fuel octane, iron is not one of the components of gasoline produced in Brazil and may have occurred through a contamination process or the use of a non-approved additive. Through research, The Japanese multinational found that shortly after the start of use, Spark plugs have residue buildup, causing starting difficulties, malfunctions at medium and high revs, in addition to an increase in the level of pollutant emissions and fuel consumption.

According to NGK, During visual analysis of parts, signs of current leakage were also detected, a phenomenon known as flash over. Because it is an electrical conductor, The presence of iron at the tip of the spark plug causes loss of insulation, reducing fuel burning efficiency. Because it has a high melting point, Not even the operation of the engine is able to promote the self-cleaning of the items.

"In cases of prolonged use of candles contaminated by iron oxide, The Flash Over Covers the surface of the part insulator, which can induce the mechanic to mistake it for a charred candle", alerta Hiromori Mori, NGK Technical Assistance Consultant.

According to the manufacturer, contaminant buildup can be identified by visual inspection of the part. In these cases, The recommendation is to replace the spark plug set and check the condition of the oxygen sensor and catalytic converter, which can also be affected. It is also necessary to pay attention to the fuel present in the tank, which may also contain the contaminant. The result of this analysis reinforces the use of spark plugs as a means of diagnosing failures and loss of vehicle engine performance.

By the information from the SAC, NGK found the presence of iron oxide in vehicles from several states of the country, like São Paulo, Paraná, Rio de Janeiro, Minas Gerais and Santa Catarina. The fact was confirmed by the analysis contracted by the company with the Technological Center for Quality Control, the Falcon Bauer.

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