5 reasons why spark plugs get soot
- March 27, 2023
- 0
Spark plugs in any gasoline engine are one of the most accurate indicators of its condition. Using them, with a high degree of probability, it is possible to
Spark plugs in any gasoline engine are one of the most accurate indicators of its condition. Using them, with a high degree of probability, it is possible to identify some malfunctions and identify problems in the operation of an expensive unit. About why completely new and high-quality spare parts are quickly covered with soot, the AvtoVzglyad portal tells.
The air filter affects the performance of consumables. If it is clogged with dirt, the engine will begin to “choke”. This leads to incomplete combustion of the fuel. It is on the “candles” that black deposits appear. It’s worse if the driver decides to save money and put a cheap filter element. The paper there is of low quality and the density is high. The result is the same as described above. The new spare part literally kills it, and the car owner thinks that there are serious problems with the power unit.
The condition of the injectors is the second thing to pay attention to. An oily coating appears after one or more “scribbles” begin to “pour”. If it is “heart of steel” with direct injection and the pressure in the fuel system is high, the electrodes immediately turn black.
For diagnostics, you need to check the pressure in the fuel rail. This makes it clear what state the pressure regulator is in. If it’s not working properly, the fuel-air mixture may be too rich. Hence the soot.
Let’s not forget about the different sensors. After all, it is they who send signals to the ECU, that is, the “brain” of the machine. And then the electronics start the mixing process.
The main thing here is the Mass Air Flow Meter (DMRV). It acts as a “gauge” for the amount of air entering the cylinders.
Owners of used brands of ours are already accustomed to the fact that the sensor fails quite early. There were times when he just fell off. As a result, the electronic control unit gives incorrect commands to the entire system. As a result, in addition to black candles, “breakdowns” in engine operation, increased fuel consumption and a host of other surprises appear.
Another seemingly insignificant detail. Problems can also arise from poor ground contact. In this case, a low voltage is applied to the ignition coil. Hence the candle gives a weak spark. And if the engine suffers from oil burning, then these two factors give a greasy black layer on the electrode.
Bad ground contact
Photo: Volgina-avto.ru
The air filter affects the performance of consumables. If it is clogged with dirt, the engine will begin to “choke”. This leads to incomplete combustion of the fuel. It is on the “candles” that black deposits appear. It’s worse if the driver decides to save money and put a cheap filter element. The paper there is of low quality and the density is high. The result is the same as described above. The new spare part literally kills it, and the car owner thinks that there are serious problems with the power unit.
The condition of the injectors is the second thing to pay attention to. An oily coating appears after one or more “scribbles” begin to “pour”. If it is “heart of steel” with direct injection and the pressure in the fuel system is high, the electrodes immediately turn black.
For diagnostics, you need to check the pressure in the fuel rail. This makes it clear what state the pressure regulator is in. If it’s not working properly, the fuel-air mixture may be too rich. Hence the soot.
Let’s not forget about the different sensors. After all, it is they who send signals to the ECU, that is, the “brain” of the machine. And then the electronics start the mixing process.
The main thing here is the Mass Air Flow Meter (DMRV). It acts as a “gauge” for the amount of air entering the cylinders.
Owners of used brands of ours are already accustomed to the fact that the sensor fails quite early. There were times when he just fell off. As a result, the electronic control unit gives incorrect commands to the entire system. As a result, in addition to black candles, “breakdowns” in engine operation, increased fuel consumption and a host of other surprises appear.
Another seemingly insignificant detail. Problems can also arise from poor ground contact. In this case, a low voltage is applied to the ignition coil. Hence the candle gives a weak spark. And if the engine suffers from oil burning, then these two factors give a greasy black layer on the electrode.
Source: Avto Vzglyad
Donald Salinas is an experienced automobile journalist and writer for Div Bracket. He brings his readers the latest news and developments from the world of automobiles, offering a unique and knowledgeable perspective on the latest trends and innovations in the automotive industry.
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