水泵进水口处存在水滴 原因：a.冷却水阀进水管或冷却风扇中的蒸汽倒流到柱塞泵进水管中使进水口处形成水滴b.水泵进水口处有水滴c.水泵进水口有水珠发生时，冷却风扇会向柱塞泵进水管中吹气排出d.泵在运转中发生震动。

处理方法：a.检查进水管和出水管的水封是否破损漏了气或水封内液体的流速过慢指出水管内液体流至汽缸前与缸壁发生接触，即蒸发出来）b.清洗水封并更换进水管和出水管c.检查进气阀进气量是否不足（进气量不足可适当增大进气量）。

d.如进水管中存有水珠也要及时清除掉e.如进水管中存在水滴应先放掉进水管中水雾后再使用 在使用过程中，由于风机不正常运转，致使风机冷却系统产生大量水雾化后形成大量水珠 这是因为水分子在柱塞泵中流动时，通过水分子与气缸壁接触造成的。

因此水分子在冷却系统中是呈固态的当水分子与冷却风扇、进水管、汽缸壁上的蒸汽发生碰撞后凝结成水珠而形成水珠这种情况常发生于水雾较大或进气管的末端其原因是：当气缸吸入过量水后，会造成气体阻力加大而不能排出，从而造成水雾过大。

当水珠经过进气管时（在进气管段）则会被排出而水分子进入汽缸时则会在汽缸壁上粘附形成水珠滴到汽缸内因此当水珠过多时很容易发生水雾过大损坏发动机内部部件（如叶片）及缸体因此这时应及时清洗风扇、进水管及水箱等处是否有水珠形成，如果水珠过多应及时排出。

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