increased emissions

When the carbon are excessive, you will knock. Because most modern vehicles use a knock sensor, knock once production, would be put off the ignition timing, when to defer to a certain degree, of course, without having to push, but the power has decreased a lot. Because you can't accurately time ignition, ignition time of most major consequences for the deferred fuel consumption is increasing.

while carbon oil and strong enough, can eventually lead to insufficient power. In addition, in a mixed concentration of oil and gas in the engine and ignition on q did not meet the requirement under the conditions of work can lead to incomplete combustion, exhaust gas emissions fail to meet standards, pollution of the environment.