What is the spark plug model for the Vios?

1 Answers
LincolnRose
07/30/25 2:20am
The spark plug brand for the Vios is DENSO from Japan, with the model number C16HR-U11 and a heat range of 5. It is a high-end product from DENSO. The spark plug is a crucial component of the gasoline engine's ignition system. It introduces high voltage into the combustion chamber and generates a spark by jumping across the electrode gap, thereby igniting the combustible air-fuel mixture in the cylinder. How spark plugs work: 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 center 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 center electrode, it ionizes the medium between the center electrode and the ground electrode, producing a spark that ignites the air-fuel mixture in the cylinder. Spark plug replacement interval: Under normal maintenance conditions, replacement is recommended every 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it's advisable to follow the owner's manual. The following standards can be referenced for maintenance and replacement: Platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers.
Was this review help?
20
2
Share
More Forum Discussions

At What Temperature Will a Tire Burst?

Tires can generally withstand a maximum temperature of 121.1°C. Daily checks to prevent tire bursts include: 1. Regularly inspect whether the tire has reached the wear indicator warning line. Normally used tires should be replaced immediately once they reach this mark. 2. Check the tire pressure at least every two months. Do not rely solely on visual inspection of the sinking amount. If low pressure is detected, identify the cause of the leak. 3. Frequently check for tire damage, such as punctures or cuts. Damaged tires should be repaired or replaced promptly. 4. If the two front tires have been repaired, they should be adjusted to the rear wheels to ensure no hidden risks in the front tires. Remove stones from the tread grooves promptly to avoid deformation of the tire crown. 5. Avoid exposing tires to oils and chemicals. 6. Regularly perform four-wheel alignment checks on the vehicle. If poor alignment is found, correct it immediately; otherwise, it may cause irregular tire wear and reduce tire lifespan.
3
2
Share

What does it mean when the car display shows 'Please change engine oil immediately'?

When the car display shows 'Please change engine oil immediately', it is a reminder that the engine oil has reached its service limit and needs to be replaced promptly. Additional information about engine oil is as follows: 1. If you find that the engine oil level is too low, quickly locate a nearby repair shop or gas station to replenish the oil. It is essential to use the same type of oil as the original and avoid mixing different oils, as this can alter the oil's properties, such as reducing its lubrication and cooling performance, thereby failing to adequately protect the engine. 2. The engine oil level should not exceed the upper limit on the dipstick. Exceeding this limit can increase engine load, affect performance, and over time, damage the engine's exhaust ventilation system, increase carbon deposits, and even lead to oil burning if the oil level is too high.
7
3
Share

Can small cars enter the Sichuan-Tibet Line?

Sedans can travel on the Sichuan-Tibet Line, but due to the mountainous terrain, it is recommended to opt for SUVs or off-road vehicles instead. More details are as follows: 1. The overall road conditions of the Sichuan-Tibet Line are not ideal. Firstly, the roads are steep with numerous high peaks—there are 15 peaks to cross along the way, along with continuous curves like those at Zheduo Mountain. Secondly, the road conditions are poor, often encountering mountain floods, mudslides, landslides, and falling rocks. 2. Although large-scale road construction has been carried out on the Sichuan-Tibet Line in recent years, many sections are temporary detours without solid roadbeds. Heavy vehicles leave deep ruts, and construction units generally do not repair them promptly, making it impossible for low-clearance vehicles to pass. 3. A significant portion of the Sichuan-Tibet Line consists of gravel roads covered with sharp, knife-like stones that cut into tires. Sedan tires, designed for asphalt roads, are relatively thin and cannot withstand the severe damage from gravel roads. Additionally, there are few tire repair points along the route, making tire-related issues particularly troublesome.
9
3
Share

What are the five major systems of an engine composed of?

The five major systems of an engine consist of the fuel supply system, starting system, cooling system, lubrication system, and ignition system. Below are the detailed introductions of the five major systems of an engine: 1. Fuel supply system. The function of the gasoline engine fuel supply system is to prepare a certain quantity and concentration of the air-fuel mixture according to the engine's requirements, supply it to the cylinder, and discharge the exhaust gases from the cylinder into the atmosphere after combustion. 2. Lubrication system. The function of the lubrication system is to deliver a certain amount of clean lubricating oil to the surfaces of relatively moving parts to achieve liquid friction, reduce frictional resistance, and minimize wear on the components; it also cleans and cools the surfaces of the parts. The lubrication system typically consists of oil passages, an oil pump, an oil filter, and some valves. 3. Cooling system. The function of the cooling system is to dissipate the heat absorbed by the heated parts in a timely manner, ensuring the engine operates at the most suitable temperature. The cooling system of a water-cooled engine usually comprises a cooling water jacket, a water pump, a fan, a radiator, and a thermostat. 4. Ignition system. In a gasoline engine, the combustible mixture in the cylinder is ignited by an electric spark. For this purpose, a spark plug is installed on the cylinder head of the gasoline engine, with its head extending into the combustion chamber. All the equipment that generates an electric spark between the spark plug electrodes at the right time is called the ignition system, which typically consists of a battery, a generator, a distributor, an ignition coil, and spark plugs. 5. Starting system. It mainly consists of a battery, starting control and transmission mechanism, and a starter. The function of the starting system is to convert the electrical energy from the battery into mechanical energy through the starter to initiate the engine's operation.
17
4
Share

How to Determine if Tire Pressure is Normal?

Determining tire pressure involves the following specific steps: 1. Generally, the front and rear tire pressures of a car are different, and for different vehicle models, the tire pressure varies between full load and empty load conditions. If the vehicle is empty, the front tire pressure is around 2.5 bar, and the rear tire pressure is around 2.4 bar, which falls within the normal range. For specific tire pressure standards, refer to the tire pressure values indicated on the vehicle's label sticker. 2. Tire pressure is affected by seasons. In summer, when temperatures are high, tires tend to heat up during driving. If the tire pressure is too high, it can easily lead to a blowout, so the pressure should be slightly lower. In winter, the tire pressure should be a bit higher than in summer due to thermal contraction and expansion. Generally, the tire pressure of a car in winter should be appropriately increased by about 0.2 bar, with a range of 2.5 bar to 2.8 bar being more suitable. 3. If the tire pressure is in a normal state, the outer side will have 4-5 tread blocks in contact with the ground, which corresponds to a normal range of 2.2-2.5 atmospheres. If more than 6 tread blocks are in contact with the ground, it indicates that the tire pressure is too low and needs to be replenished promptly. If fewer than 4 tread blocks are in contact, it means the tire pressure is too high, and some air should be released appropriately. 4. If the tire pressure is insufficient, the contact area between the tire and the ground increases, leading to greater friction resistance. The steering will feel heavier, fuel consumption will increase, and there will be a sense of insufficient power. Due to low tire pressure, the sidewall of the tire will deform, accelerating the aging of internal steel wires and fabric layers, thereby shortening the tire's lifespan. Driving for extended periods with insufficient tire pressure is very dangerous and requires timely replenishment.
6
3
Share

Is there a retirement period for private cars now?

Regarding the retirement period for private cars, the latest regulation states that after reaching a mileage of 600,000 kilometers, the vehicle will be guided for retirement. Private cars that meet the following conditions need to be retired: 1. Vehicles that still fail to meet the national safety technical standards for in-use vehicles after repairs and adjustments. 2. Vehicles that still fail to meet the national standards for in-use vehicles regarding atmospheric pollutant emissions or noise after repairs, adjustments, or the adoption of control technologies. 3. Vehicles that have not obtained the mandatory inspection compliance mark for three consecutive inspection cycles after the expiration of the inspection validity period. 4. Vehicles that have reached a certain age and mileage.
9
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.