
Baojun 730 requires spark plug replacement every 40,000 kilometers. Spark plugs, commonly known as sparkers, function by discharging the pulsed high voltage electricity sent from the high-voltage wires (sparker wires), breaking down the air between the two electrodes of the spark plug to generate an electric spark, thereby igniting the air-fuel mixture in the cylinder. The Baojun 730 is a family MPV product under the SAIC-GM-Wuling Baojun brand, with body dimensions of 4780mm in length, 1820mm in width, and 1755mm in height, and a wheelbase of 2750mm. In terms of exterior design, the rear styling of the Baojun 730 has undergone significant adjustments, with reduced chrome strips and an enlarged tailgate that spans the entire horizontal width of the rear. The tail lights have been redesigned from a split-type to a one-piece design, featuring sharp styling and a horizontal LED light strip that is fashionable, eye-catching, and exudes a sense of technology.

I've been driving my Baojun 730 for several years and typically replace the spark plugs every 40,000 kilometers. I remember when my car had just over 40,000 km on it, the startup began to feel sluggish, the engine occasionally shook, and fuel consumption noticeably increased a bit. I took it to the repair shop, and the technician said the spark plug electrode gap had widened, affecting ignition. After replacing them with a new pair of standard nickel-alloy spark plugs, which cost less than 200 yuan, the car immediately regained its power, acceleration became smooth, and fuel consumption returned to normal. I recommend Baojun owners not wait for issues to appear before replacing them; instead, regularly check the spark plugs' condition at around 30,000 km to see if there's any carbon buildup or wear. For city driving with frequent stops, wear might be faster, so preventive maintenance based on mileage is the safest approach. Also, during maintenance, check other ignition components to avoid related issues—don't skimp on small problems that could escalate into major repairs.

The replacement interval for the Baojun 730's spark plugs is typically around 40,000 kilometers, depending on the material used. Standard nickel alloy plugs have a shorter lifespan; after 40,000 km, the electrodes may accumulate carbon deposits or widen, leading to decreased ignition efficiency, which can cause engine shaking and difficulty starting. If upgraded to platinum or iridium spark plugs, they can last over 60,000 km, but the factory-installed ones are usually standard type. I recommend checking the ignition coils and aging of the cylinder wires when replacing them, as issues with the spark plugs in the overall ignition system can affect emissions and fuel consumption. Don't just focus on mileage; also consider the usage environment: highway driving may allow them to last longer, while urban congestion may require earlier inspection. During each maintenance, have the mechanic measure the electrode gap with a tester to prevent sudden stalling issues. Saving a little money on timely maintenance isn't worth it, as a sudden breakdown on the road can be a headache.

As a Baojun 730 owner, I typically replace the spark plugs at 40,000 kilometers. If you delay the replacement, the car may produce squeaky noises when starting or experience weak acceleration, along with noticeably increased fuel consumption. Pay attention to these symptoms during daily driving and proactively inspect when the time comes. A standard replacement is simple and inexpensive, costing around 100 to 200 yuan. Don’t risk extending the mileage—worn spark plugs can lead to unstable ignition. A simple approach: refer to the maintenance manual for mileage records and regularly verify at the service center.


