Baojun 730 Difficult to Start When Cold

[DiAiden]

Baojun 730 generally has difficulty starting when cold. The following checks should be performed: 1. Remove the spark plugs and inspect them to see if carbon deposits need to be cleaned or replaced; 2. Check the fuel injectors for carbon buildup and clean them. If it's time for maintenance, proceed with servicing; 3. Another possibility is a faulty cold-start signal from the coolant temperature sensor (this issue can be identified by diagnostic tools with corresponding fault codes). Most cases of cold-start failure are caused by excessive carbon deposits. It is recommended to use high-grade synthetic oil after maintenance and repair. High-quality engine oil offers advantages such as anti-aging and high-temperature resistance, thus reducing carbon buildup. Generally, during the warm-up process at idle, the engine speed should first return to the normal idle level. This process should take at least 30 seconds. The vehicle can then start moving. However, within the first 200-300 meters, the driver should avoid pressing the accelerator too hard. The general practice is to wait until both the coolant temperature and engine speed reach the required levels before accelerating. Warming up the car in winter is an important task, as a car that hasn't been properly warmed up can damage the engine and, over time, reduce the vehicle's lifespan.

[Garcia]

I have experience in car repair and found that common causes of difficult cold starts for the Baojun 730 include battery aging, poor discharge capability in cold weather—replace it when voltage drops below 12V. Carbon buildup or wear on spark plugs can also affect ignition, so it's recommended to inspect and replace them every 20,000 kilometers. The fuel pump may stick in low temperatures, causing poor fuel delivery, making it important to check if the fuel lines are clear. Using thinner oil like 0W-20 can reduce cold-start resistance. Worn carbon brushes in the starter motor are also common; weak cranking sounds require inspection. I helped a friend with this issue—replacing the battery immediately made it smooth again. Regular maintenance can prevent problems, but if issues persist, visit a professional shop to diagnose ECU or sensor settings—safety first.

[MacCarter]

As a long-time owner of the Baojun 730 with nearly a decade of experience, I often faced difficult starts in winter. Initially, changing the battery solved the problem, but later I found that high oil viscosity also caused issues. Switching to winter-specific oil significantly improved the situation. I learned to diagnose issues myself: if the engine cranks quickly but doesn't start, it's likely the spark plugs; if it doesn't crank at all, the battery is weak. Remember to clean carbon deposits from the throttle body - restricted airflow affects starting performance. I've developed the habit of parking in a garage or pre-heating the engine for one minute by turning on the ignition. After sharing these tips with my neighbor, he used similar methods to fix his car and now drives with more peace of mind. Simple maintenance like replacing air filters can prevent bigger issues - don't wait until engine damage occurs to take action.

[SanMila]

From a technical enthusiast's perspective, the difficulty in cold starting the Baojun 730 is often related to sensor or ECU issues. For example, a faulty intake air temperature sensor can lead to incorrect fuel mixture ratios, affecting ignition. Checking OBD fault codes can quickly pinpoint the problem. If error code P0113 appears, the sensor needs replacement. Worn or improperly gapped spark plugs are common culprits—try upgrading to high-performance models. Insufficient cold cranking amps (CCA) in the battery may require upgrading to a maintenance-free battery with higher CCA. Worn starter motor contacts increase resistance in cold conditions, which can be alleviated with regular lubrication. DIY tools can test voltage, but deeper faults require ECU debugging at a 4S shop to avoid engine damage.

[VonGriffin]

With decades of driving experience, I've found cold starts troublesome with the Baojun 730, especially in winter. Empirically, pressing the start button for a few seconds to preheat the system before ignition helps avoid engine damage from revving a cold engine. Check for loose or corroded battery terminal connections—clean them for better contact. Use thinner, low-temperature oil like 0W grade for smoother flow. Replace old spark plugs and inspect them every 10,000-20,000 km. A clogged air filter reduces airflow, causing unstable idling—replace it if needed. Keeping the garage warm or using a car cover to prevent icing also helps. Don't ignore recurring issues; early repairs save money and hassle. Safe driving relies on prevention.