为何机油消耗量过大傅炳文一台小四轮拖拉机工作时冒蓝烟，发动机满负荷工作８小时，机油消耗量达５００克。显然机油消耗量过大。经检查油封、垫片及油管接头处没有漏油，曲轴箱通风良好，空气滤清器机油面合适，气缸间隙、气门杆与气门导管的配合间隙均符合标准要求。用... Why oil consumption is too large Fu Bingwen A small four-wheel tractor blue smoke, full-load engine work 8 hours, the oil consumption of 500 grams. Obviously excessive oil consumption. After checking the oil seal, gaskets and pipe joints there is no oil leakage, crankcase ventilation, air filter oil plane appropriate, cylinder clearance, valve stem and valve guide with the gap are in line with standard requirements. use...