Carbon deposit on the top of piston will form many hot surfaces, which will cause premature combustion and deflagration and shorten the service life of engine.

　　氣門及其座圈工作面上聚有積碳，會(huì)引起氣門關(guān)閉不嚴(yán)而漏氣，出現(xiàn)發(fā)動(dòng)機(jī)難啟動(dòng)、工作無力以及氣門易燒蝕等不良現(xiàn)象。氣缸蓋部位有了積碳，會(huì)降低發(fā)動(dòng)機(jī)的冷卻效果，使發(fā)動(dòng)機(jī)的動(dòng)力性和經(jīng)濟(jì)性都大大降低。

　　Carbon accumulation on the working face of the valve and its seat ring will cause the valve to close loosely and leak, resulting in engine difficult to start, inadequate work and valve easy to ablate and other undesirable phenomena. Carbon deposit in the cylinder head will reduce the cooling effect of the engine and greatly reduce the power and economy of the engine.

　　氣門導(dǎo)管和氣門桿部積碳結(jié)膠，將加速氣門桿與氣門導(dǎo)管的磨損，甚至?xí)饸忾T桿在氣門導(dǎo)管內(nèi)運(yùn)動(dòng)發(fā)澀而卡死。

　　Carbon deposit and cementing on the valve duct and stem will accelerate the wear of the valve rod and valve duct, and even cause the valve rod to move astringently and stuck in the valve duct.

　　活塞環(huán)槽內(nèi)積碳，會(huì)使活塞環(huán)邊隙、背隙變小，甚至無間隙大墻壞造成活塞環(huán)膠結(jié)失去彈性，甚至折斷活塞環(huán)而拉缸。

　　Carbon deposit in piston ring groove will make piston ring edge clearance and back clearance smaller, and even cause the failure of large wall without clearance to lose elasticity of piston ring cementation, and even break the piston ring and pull the cylinder.

　　噴油嘴聚有積碳，極易卡死噴油嘴，造成發(fā)動(dòng)機(jī)缺缸運(yùn)行或突然熄火。

　　The fuel nozzle accumulates carbon, which can easily jam the fuel nozzle, resulting in engine cylinder shortage or sudden extinction.

　　預(yù)燃室啟動(dòng)噴孔聚有積碳，將堵塞噴孔，使發(fā)動(dòng)機(jī)啟動(dòng)困難。

　　Carbon accumulation in the nozzle of the precombustion chamber will block the nozzle and make it difficult for the engine to start.

　　火花寒積碳過多，在燃油濕潤(rùn)后，相當(dāng)于火花塞電極間并聯(lián)分路電阻，造成火花寒漏電不能工作。

　　Spark cold deposits too much carbon, which is equivalent to parallel shunt resistance between spark plug electrodes after the fuel is wet, resulting in spark cold leakage can not work.