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Ignition system review can increase used car resale value

02 Sep 2025
5 min reading

Sale of used and used has been on the rise since 2011; preventive maintenance has become essential for the valorization of goods.

São Paulo, agosto de 2025 - Em 2024, o mercado de carros usados no Brasil alcançou seu melhor desempenho em 13 anos, com 15,77 milhões de unidades vendidas, According to the Federation of used vehicle dealers. For those who want to enjoy this favorable moment, Investment in preventive maintenance increases the attractiveness of buyers and the resale value. One of the main aspects is to ensure the revision of the ignition system, since its proper functioning guarantees performance, confidence to the buyer and can avoid devaluation of the car for hidden problems, as failures and returns as a guarantee of the used. For the sale of vehicles in particular, the revision of the ignition system, Avoid complaints and guarantees buyer's satisfaction.

Before completing the sale, and NGK, Niterra brand specialized in ignition systems, It recommends a precautionary inspection, where various vehicle items are inspected, like chassis, engine number, streaming, Body of the body and vehicle documentation. In the case of the buyer, Many workshops offer the pre -purchase inspection service, where there are several vehicle review and maintenance items. A very important point is the inspection of the ignition system, that in addition to avoiding inconvenient situations with the daily use of the vehicle, You can indicate several problems in the vehicle, such as water infiltration in the combustion chamber, lubricating oil burning that may indicate engine wear or on the overhapping system (turbo), in addition to the use of poor quality fuel.

1- Spark plugs: are responsible for burning the air/fuel mixture. Worn candles increase fuel consumption, can cause ignition failures, increased pollutant emissions and difficulty starting the engine. A game of candle in good condition conveys the idea of ​​well cared for engine, Raising confidence and resale value. PARTS LIKE SPECIAL CANDLES, as of Iridium and Platinum, that offer a better burning, can contribute to this perception.

2- Sailing ends: conduct the electric current of the coil to the ignition candles. Low quality cables, with oxidation or current escape causes failures, increased consumption and even can generate electrical interference. NGK cables ensure stable engine operation, What values ​​the car, besides offering a high durability.

3- Ignition coil: Transforms the system voltage into a high voltage, que em alguns casos pode chegar a 30.000 volts, where it will generate a spark in the candle, which is responsible for burning the air/fuel mixture. Damaged coil generates starting failures and loss of performance. When in good condition, Shows that the engine is righteous and reliable.

4- Fuel injection system : Are responsible for injecting the correct amount of fuel and at the right time, For each engine operating condition. Are composed of various sensors and actuators, that work in conjunction with an electronic control module. Defects here affect performance and can leave marks on candles (carbonization, burning failures). A clean and efficient system preserves the engine and values ​​the car.

5 - Cooling system: Cooling fluid leakage, can generate engine overheating and automatic transmission, generating high maintenance costs. The correct operation of the system avoids many problems and costs with the warranty of a vehicle.

6- Turbocharger (in turbo engines): Wear can be identified by burning oil in the candles and presence of oil in the admission air pressurization hoses. A turbo in good condition demonstrates correct care and maintenance, mainly in relation to the change of engine oil and use of correct lubricant, which positively impacts the price of the vehicle.

Pre-Complete Alert Signs

The purchase of a vehicle, even if it is used, represents an important decision, due to the high costs involved. To the seller beyond the profit earned in the sale of the vehicle, can represent a hidden cost, due to the guarantees involved in the sale. A well realized review, with quality products at the time of sale avoids spending on hidden costs with the warranty of the sold vehicle. For the customer, it represents a moment of satisfaction and personal victory for the realization of a personal dream.

A pre -purchase review, carried out by a trusted mechanic, It is a way to avoid many problems with the purchased vehicle. The use of good quality parts, pode indicar que o veículo passou por manutenções bem realizadas e valorizam o bem.

“In the case of ignition candles, Your analysis can reveal even more serious problems. Residues at the tip of the candle may indicate that the engine is burning oil, suggesting internal wear or failure in the gas recirculation system, in turbo engines, You can even point out turbine wear ”, afirma Hiromori Mori, Niterra Technical Assistance Consultant. “Também é possível identificar infiltração de fluido de arrefecimento na câmara de combustão, What may be related to overheating, Burning of the Head Board, germination, cracks or corrosion ”.

Reviewing the ignition system is one of the technical factors that directly influence the car appreciation in resale. When buying, perform the review and ensure more reliability and driver performance, guarantees a fairer negotiation, and helps to avoid future costs of high cost.

Niterra do Brasil, through its NGK and NTK brands, oferece uma série de componentes para os automóveis, ranging from ignition, platinum candles and iridium candles to sensors for various systems such as injection, motor and abs, bringing high quality to the automotive repair market.

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