如果是頂置發動機，可能是沼氣發電機組的氣缸磨損、橢圓度、圓柱度造成的。活塞環的彈性降低；同一活塞上活塞環的端部間隙相反；活塞環的字側應朝上，但應朝下安裝；活塞環被積碳卡在環槽中。如果是側裝發動機，推桿的閥座和閥頭錐面磨損，排氣閥頭積碳或燒蝕，造成漏氣。

If it is an overhead engine, it may be caused by cylinder wear, ovality and cylindricity. The elasticity of the piston ring is reduced; The end clearance of the piston ring on the same piston is opposite; The word side of the piston ring should be upward, but should be installed downward; The piston ring is stuck in the ring groove by carbon deposit. If the engine is side mounted, the valve seat and valve head cone of the push rod are worn, and the exhaust valve head is carbon deposited or ablated, resulting in air leakage.

氣缸體漏氣現象:發動機運轉時，會發出“吱吱、吱吱”的聲音，曲軸箱通風裝置冒出濃煙，加速時會抖動。如何診斷發動機哪個氣缸漏氣:

Air leakage of cylinder block: when the engine is running, it will make a "squeak, squeak" sound, and the crankcase ventilation device will emit smoke, which will shake when accelerating. How to diagnose which cylinder of the engine leaks:

1。分別拆下火花塞，用長鼻油壺從該火花塞孔向活塞周圍注油，然后將火花塞安裝到火花塞孔內，插上高壓阻尼線，起動發動機。如果發動機工作后，“親吻”的聲音消失，就證明漏氣了。2.熄火方法:拆下某氣缸火花塞的高壓阻尼線后，發動機運轉時“唰、唰”聲消失，說明該氣缸漏氣。

1。 Remove the spark plugs respectively, fill oil around the piston from the spark plug hole with a long nose oil can, then install the spark plugs into the spark plug hole, plug in the high-voltage damping wire, and start the engine. If the sound of "kissing" disappears after the engine works, it indicates that there is air leakage. 2. Shutdown method: after removing the high-pressure damping wire of the spark plug of a cylinder, the "Shua, Shua" sound disappears when the engine is running, indicating that the cylinder is leaking air.

消除鋼瓶泄漏:1.如果活塞環損壞、失去彈性和磨損，應更換。

Eliminate cylinder leakage: 1. If the piston ring is damaged, lost elasticity and worn, it should be replaced.

2.如果活塞環倒置安裝，則應重新組裝，或者如果活塞環卡在凹槽中，則用三角形刮刀小心地刮掉積碳，然后重新組裝，使其在凹槽中自由旋轉。

2. If the piston ring is installed upside down, reassemble it, or if the piston ring is stuck in the groove, carefully scrape off the carbon deposit with a triangular scraper, and then reassemble it to make it rotate freely in the groove.

3.檢查閥座和閥頭的錐面。如果排氣閥被燒蝕，更換閥門，并研磨閥門和閥座將其密封。檢查3密封時，只要燃燒室充滿煤油，3分鐘后，用手指輕輕觸摸閥桿，看看燃燒室中是否有煤油，然后就可以確定閥門是否漏油。試驗后，清潔燃燒室、閥門和閥座，使其清潔。如果閥座松動，請更換。

3. Check the conical surface of valve seat and valve head. If the exhaust valve is ablated, replace the valve and grind the valve and valve seat to seal it. When checking the sealing of 3 #, as long as the combustion chamber is filled with kerosene, touch the valve stem gently with your finger 3 minutes later to see whether there is kerosene in the combustion chamber, and then you can determine whether the valve leaks oil. After the test, clean the combustion chamber, valve and valve seat to make them clean. If the valve seat is loose, replace it.