1.熄火前转速不稳首先应想到燃油是否用完,所以首先检查油箱内是否有油。如油箱中不缺燃油,可摇车检查,若无喷油声,可能有空气进入燃油系。如果排除空气后虽能起动,但加负荷后转速仍然不稳,随后又熄火,这可能是油路被堵塞,应清洗滤清器或被堵油路。 2.熄火前排气管冒白烟,转速不稳应检查油中是否有水。如将水排除后,排气管还冒烟,则应考虑 1. Stalling speed before stalling should first think of whether the fuel run out, so first check the tank for oil. If the fuel tank is not lack of fuel, can check the rocking car, if there is no fuel injection sound, there may be air into the fuel system. If you can start after excluding air, but after the load is still unstable speed, then turn off the flame, which may be blocked oil line, the filter should be cleaned or blocked oil circuit. Exhaust pipe smoke white smoke before turning off, unstable speed should check whether there is water in the oil. If the water is excluded, the exhaust pipe also smoke, you should consider