What are the reasons for the difficulty in starting a Jiangling National 4 cold vehicle?
3 Answers
The reasons for the difficulty in starting a Jiangling National 4 cold vehicle include a weak battery, increased oil viscosity, obstructed gasoline flow, poor ignition system performance, and frozen exhaust pipes. The external characteristic of frozen exhaust pipes is no cylinder pressure, with normal fuel and power supply, but the vehicle fails to start, which usually occurs in vehicles with low usage frequency. A weak battery is characterized by the starter motor beginning to turn but not reaching sufficient speed, eventually resulting in only a clicking sound without rotation. Obstructed gasoline flow is characterized by no oil pressure in the engine's fuel supply pipe, often occurring on extremely cold mornings due to long-term dirt accumulation in the fuel lines. In terms of body dimensions, the vehicle measures 5995 mm in length, 1940 mm in width, and 2265 mm in height, with a wheelbase of 3360 mm.
I've driven a Jiangling National IV diesel vehicle for ten years, and cold start difficulties are generally related to glow plug failure or the fuel system. In winter, low temperatures can cause diesel to thicken and solidify. If the glow plugs don't properly heat the cylinders, starting becomes difficult. Aging batteries can also be a hindrance due to insufficient voltage in cold weather. It's recommended to check the glow plug connections and resistance, while also switching to low-temperature-specific engine oil and replacing the fuel filter. Carbon buildup in the engine is another hidden risk, as long-term neglect can lead to the ECU not providing sufficient glow time. Paying attention to these points during routine maintenance can reduce issues—for example, preheating for a minute or two before ignition. Don't overlook small details; insufficient coolant can also increase starting pressure.
Last winter, my Jiangling National IV model kept failing to start, and it took a long time to figure out the reason: the glow plug was broken, and replacing it fixed the issue. The mechanic also mentioned that battery power tends to drop in cold weather, affecting starting power. Now, I proactively change to a winter fuel filter and low-viscosity oil, and preheat the system before starting. Poor fuel quality can also clog the injectors, so I only use diesel from reputable gas stations. Simple checks for these minor issues can save a lot of trouble and time.
