NGK gives four tips for buying used cars

Special attention to the ignition system, with a larger focus for looks

of the candles, It is an attitude recommended by the company

São Paulo, fevereiro de 2025 - According to the Federation of
Used Vehicle Dealers (Fenauto), houve um crescimento de 9,2%
nas compras de carros usados em 2024. With the arrival of the new year, you
automóveis fabricados em 2004 tornam-se isentos do IPVA, What can heat up
The used vehicle market, Raising demand and stimulating sales.
Many dealers require precautionary inspection, that will identify passages
by auctions, Claims and body repairs, but before closing the purchase of
A used one, A complete mechanical check is essential, with emphasis on the
Ignition system, especially for the appearance of the candles, in order to identify
Need for repairs.
That's why NGK, Niterra brand specialized in components for systems
ignition, lists five tips for a more economical purchase to avoid
Problems that can be indicated by residues at the tip of the candles.
1- Check for oil burn: may indicate engine wear or problems
in the crankcase gas recirculation system, through the accumulation of oil in the
candles;
2- Check for coolant infiltration in the coolant chamber
combustion: This signals overheating and possible damage to the cylinder head and
Engine Block, accumulation of residues with the same color as the fluid or
presence of oxidation in the candles.
3- Look for fuel injection system issues: This
case, It is necessary to carry out the inspection on the other components of the
injection to ensure full operation. The accumulation of carbon waste
(charring of candles) is the indication of a possible problem in the system.
4- Make sure there was no use of poor quality fuel: that can
cause charring of the spark plugs and other problems for the car.

Checking the operation of the candles
At the time of review before buying the used car, buyer should check
With a reliable mechanic the tension of the secondary coil with the motor
in operation to confirm that the spark plugs are operating properly
Correct. If the voltage is too high, may indicate excessive wear of the
spark plugs or gap between electrodes; a very low voltage can be
Consequence of charring candles, Compression or use of
Contaminated fuel.
"Furthermore, The use of low-quality spark plug cables can compromise the
Engine Performance, causing difficulties in installation, failures of
operation, increase in fuel consumption and interference in the
vehicle electronic system", afirma Hiromori Mori, Assistance consultant
Niterra Technique.
If there is interference with the car's electronics, It is essential to check the
Correct application of the ignition system components, like candles, Cables and
coils, because out-of-spec resistance values can cause the
problem. Other factors to look at include installing fixtures
Electronic, such as trackers and blockers, in addition to components of the
own vehicle, as alternators, motors that have brushes, in addition to the
Correct grounding of the engine and bodywork. Ensure the use of
quality and following technical recommendations can avoid failures and losses in the
Operation of the car.
Buying a used car requires attention to several factors, especially
with regard to the health of the engine and the ignition system. NGK reinforces the
importance of having qualified professionals and using
quality to ensure a reliable and safe vehicle. In the case of the exchange of
Components, The brand provides candles, High ignition coils and cables
Quality for the aftermarket.