Carbon cleaning for spark plugs
Why spark plugs get dirty?
Basically, the spark plugs are designed to be self-cleaning. However, when they become dirty cause misfires, loss of power and fuel consumption and emissions are increasing. Different model engine requires a certain specification of the spark plug. For various reasons, spark plugs are affected by this is leak oil from the piston rings or dirty flow meter that causes injection of more fuel and then the electrode accumulates carbon deposits that cause burning it.
The long travel and high speed increase of the engine temperature, which is beneficial from the standpoint of self-cleaning of the spark plugs. However, short urban trips (start-stop traffic) is not a good thing, the temperatures are not high enough to support the self-cleaning, so carbon deposits are deposited on the electrodes.
Ultimately, this leads to poor spark and misfires. Electricity sent to the spark plug forms a short circuit in the coil, moreover unburned fuel-air mixture simultaneously circulated (via recirculation of exhaust gases – EGR), which helps build carbon deposit and other engine parts such as engine valves, turbo and geometry of the turbocharger, catalyst and others, and the rest goes through the muffler in the form of excessive emissions and pollution.