柴油机正常工作时,指示阀应升起。如果升起不高或不升起,说明机油压力不足。可以从以下几个方面诊断排除。1.机油量过少拔出机油尺,检查机油量。机油油面应在两条刻线之间。如果低于下限,首先应检查机油泵有无泄漏,机油螺栓有无松动,如有,应立即排除然后补足机油。2.机油过稀拔出机油尺,机油量正常,但机油压力下降,用 Diesel engine normal work, the indicator valve should be raised. If the rise is not high or does not rise, indicating insufficient oil pressure. You can diagnose the following aspects from the exclusion. 1. Too low the amount of oil Remove the dipstick, check the amount of oil. Oil surface should be between two lines. If below the lower limit, first check the oil pump for leaks, whether the oil bolts loosen, if any, should be immediately ruled out and then make up the oil. 2. Pull out the oil dipstick too thin, the normal amount of oil, but the oil pressure drops, with