How often should the spark plugs of Baojun 730 be replaced?

[BrielleFitz]

Baojun 730 spark plug replacement cycle: Under normal maintenance conditions, replacement is recommended after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type. It is advisable to refer to the user manual for specific guidance. You can refer to the following standards for maintenance replacement: Platinum spark plugs should be replaced at 40,000 kilometers, ordinary nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers. Spark plug working principle: The spark plug's ground electrode is connected to the metal shell, which is threaded into the engine block via the cylinder head. The insulator primarily serves to isolate the metal shell from the central electrode. The terminal nut is the part of the spark plug that contacts the high-voltage coil. When current passes through the terminal nut and the central electrode, it ionizes the medium between the central electrode and the ground electrode, generating a spark to ignite the air-fuel mixture in the cylinder.

[VanMaggie]

I've been driving my Baojun 730 for five years. The spark plugs usually need replacement every 25,000 to 30,000 kilometers. I always have the mechanic check them during each maintenance service. My 730 originally came with copper-core spark plugs, which have a relatively shorter lifespan. When they get old, ignition becomes difficult, and there's a clicking sound during cold starts. After replacing them, the engine runs smoothly again, and fuel consumption drops slightly. I remember once delaying the replacement until 40,000 kilometers, and the engine shook violently, almost damaging the ignition wires. I recommend sticking to the maintenance schedule—don’t be as careless as I was. The maintenance manual clearly states that using genuine parts is more reliable and helps prevent carbon buildup. If you frequently drive on highways or in heavy traffic, spark plug wear accelerates, so it's best to inspect them earlier.

[DelAlexander]

I often help my neighbors with car repairs. For the Baojun 730, it's recommended to replace the spark plugs approximately every 30,000 kilometers. This is because the original factory parts are mostly made of copper, which wears out quickly. After aging, the ignition efficiency decreases, leading to unstable idling, difficulty starting the engine, and increased fuel consumption. During inspections, use an ignition tester to check the spark intensity—if misfiring is detected, it's time for a replacement. Upgrading to iridium or platinum spark plugs can extend the interval to 50,000 kilometers, but they must match the original factory specifications. If replacing them yourself, be careful not to loosen the cylinder head bolts. Engine performance is linked to the entire system, and neglecting it could lead to damage to the ignition coil or oxygen sensor, which would be more costly in the long run. It's advisable to specifically check the spark plugs' condition during annual maintenance.

[DiRose]

My Baojun 730 has been running for three years, and I change the spark plugs every 25,000 kilometers. I save a lot of money by purchasing DIY parts online. The Baojun factory manual recommends an interval of 20,000 to 30,000 kilometers. I used an infrared camera to measure the thermal map and found that the weak flame from the old spark plugs affected acceleration performance. After replacing them with new ones, the car runs smoother, starts faster, and responds more sensitively. Make sure to choose the correct thread size and avoid mixing different brands, as improper installation can lead to air leaks. Regularly clean the spark plug holes to prevent dust buildup.