What are the reasons for difficult cold starts in the Wuling Hongguang S?
4 Answers
There are many reasons for difficult cold starts in the Wuling Hongguang S. It may be due to low coolant temperature in the cooling system or low lubricant temperature in the lubrication system, which can lead to difficulties in cold starts. Here are several common phenomena of difficult cold starts: 1. Not replacing spark plugs in time is a common factor. Cold starts require higher ignition energy, and after a certain mileage, the electrode gap of spark plugs will increase. If it exceeds the standard, the spark energy generated will significantly weaken, making it unable to properly ignite the mixed gas in the cylinder (commonly known as misfire), naturally resulting in difficulty starting. 2. Ignition coil failure is also very common. The ignition coil is a transformer responsible for converting the vehicle's low-voltage current into high-voltage electricity, allowing the spark plug to have sufficient voltage to "generate sparks." Once the ignition coil fails, such as cracking or leaking electricity, it will cause insufficient or lacking spark plug ignition capability, leading to the mixed gas in the cylinder not combusting, resulting in engine misfire, difficulty starting, and acceleration shuddering. 3. Regularly check whether the throttle valve and idle valve have excessive carbon deposits. Excessive carbon deposits can easily clog the idle air passage, leading to poor air intake. 4. Additionally, check whether the water temperature sensor in the engine control system is functioning properly. Issues in these two aspects can cause difficulties in cold starts of the engine.
My buddy who's driven a Wuling Hongguang for years always complains about hard cold starts in winter. Simply put, the most common issue is battery problems – insufficient voltage in cold weather leads to inadequate starting current, preventing the engine from turning over. Then there's spark plug aging or severe carbon buildup that significantly affects ignition efficiency. Clogged fuel injectors can also cause poor gasoline atomization, making combustion even harder in low temperatures. Additionally, overly thick engine oil provides poor lubrication in cold conditions, slowing down RPM, and a dirty air filter restricts air intake. I've helped fix many of these cars – the problems become more obvious when the weather turns cold. My suggestion is to check these aspects: replacing the battery in advance and maintaining the throttle body can prevent a lot of trouble.
When helping someone check a car, be straightforward. Don't rush to look for complicated issues first. If the Wuling Hongguang S has trouble starting cold, it's most likely due to a weak battery or loose connections—cold weather starts require high current that the battery can't handle. Then check if the spark plugs are blackened or burnt out; try replacing them. A dirty air filter restricting airflow can also cause problems. Finally, check if the fuel pump is supplying fuel steadily—clogged fuel injectors are the hardest to detect. If you're handy, you can take a look yourself to save money and time, but don't force anything involving the electrical system. When it's time to pay a professional, don't skimp.
My buddy who drives a van for hauling often complains about difficulty starting the engine when it's cold, mainly due to ignition system issues. For example, severely worn spark plugs or faulty ignition coils can cause weak sparks during cold starts, making it hard to ignite the gasoline. Additionally, carbon buildup in the fuel injectors leads to poor atomization, resulting in a lean fuel mixture. On top of that, gasoline has poor volatility in winter, and low-quality fuel makes things worse. The solution isn't hard—regular carbon cleaning and replacing spark plugs will usually do the trick.
