Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

At how many kilometers should car spark plugs be replaced?

1 Answers

DelJayce

07/30/25 6:57am

Under normal maintenance conditions, car spark plugs should be replaced after driving 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the user manual. The following standards can be referenced for maintenance and 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. Methods to determine if spark plugs are damaged: Remove the spark plug and observe its appearance color to assess its condition. A normal spark plug's insulator skirt and electrodes should appear gray-white, gray-yellow, or light brown. A properly functioning spark plug's insulator skirt should be reddish-brown, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plug has oil stains or deposits but is not damaged, it can continue to be used after cleaning the oil and deposits. If the spark plug is severely damaged, with signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plug with a new one. Additionally, if the spark plug appears black as if smoked, it indicates the wrong heat range was selected or the mixture is too rich, with oil creeping up.

Was this review help?

10

4

Share

More Forum Discussions

What Causes Intermittent Car Starting Issues?

Intermittent car starting issues can be caused by the following reasons: 1. Steering wheel in locked position: Many drivers encounter situations where the car won't start and the key won't turn. This usually happens when the steering wheel isn't straightened after parking (at an angle exceeding 30 degrees), triggering the automatic steering lock as an anti-theft feature. 2. Gear not in Park position: For automatic transmission vehicles (AT, CVT, AMT), always ensure the gear is in P position when starting. 3. Smart key battery depletion: If the dashboard displays "key not detected" despite the key being inside the car, the smart key battery might be weak, preventing the system from detecting its signal. 4. Dead car battery: Failure to start could result from battery drain (e.g., leaving headlights on) or expired battery life. Refer to your maintenance manual for timely replacement. 5. Empty fuel tank: If the fuel gauge shows below the red line, the car naturally won't start. Also pay attention to fuel quality.

Will Deducted Points on the Driver's License Affect the Renewal?

Deducted points on the driver's license do affect its renewal. If a driver accumulates 12 points within one cycle, a six-year license cannot be renewed as a ten-year license, and a ten-year license cannot be renewed as a permanent one. Below is the renewal process: 1. Fill out the form: Complete the "Motor Vehicle Driver's License Application Form" and submit a medical condition certificate issued by a county-level or military regiment-level medical institution. 2. Prepare the required documents: Apply for renewal at the vehicle management office where the license was issued within 90 days before the expiration date. When applying, bring the original and a copy of your ID card, the driver's license, and visit any license processing point where a doctor from a "county-level or higher medical institution" is stationed to conduct an on-site physical examination and fill out the "Motor Vehicle Driver's Physical Condition Certificate." 3. Prepare photos: Bring three recent, color, front-facing, half-inch photos with a white background, where the head occupies two-thirds of the photo length.

What are the symptoms of a faulty oil control valve?

If the oil control valve is faulty, the vehicle may stall during driving and may also experience excessively high oil pressure. When the oil pressure is too high, it can lead to an overly rich air-fuel mixture, black smoke from the exhaust pipe, insufficient power, and may cause low oil pressure or even failure to establish oil pressure, increased fuel consumption, requiring immediate attention. Fuel system pressure inspection method: 1. Pressure relief: Before checking the fuel system pressure, it is necessary to relieve the pressure first. Remove the fuel pump fuse, relay, or fuel pump plug, then start the engine until it stalls on its own. After that, start the engine again and disconnect the negative terminal of the battery. 2. Install the fuel pressure gauge: Connect the fuel pressure gauge in series with the fuel line to inspect the fuel system pressure. When removing the fuel line, place a cloth or cotton pad under the fuel line connection to prevent fuel leakage on the ground. Install the fuel pressure gauge onto the fuel pressure gauge adapter, and finally, for vehicles with a pressure test port, connect the fuel pressure gauge to the test port.

Can Tires Be Covered by Insurance?

Tires can be covered by insurance. The following are the specific functions of car tires: 1. Support the entire weight of the vehicle: Bear the load of the car and transmit forces and moments in other directions. 2. Transmit traction and braking torque: Ensure good adhesion between the wheels and the road surface to improve the car's power performance, braking performance, and passability. Together with the car suspension, they cushion the impact during driving and dampen the resulting vibrations. 3. Prevent damage to car components: Protect car parts from severe vibrations and early damage, adapt to the high-speed performance of the vehicle, reduce driving noise, and ensure driving safety, handling stability, comfort, and energy efficiency.

How Many Questions Should I Practice for Subject One?

The Subject One question bank contains over 1,300 questions. The exam randomly selects 100 questions, with each question worth one point. The exam duration is 45 minutes, and a score of 90 or above is required to pass. The over 1,300 questions cover five types of topics: road traffic safety laws and regulations, traffic signals, safe and civilized driving knowledge, motor vehicle driving operations, and local regulations. Exam Process: Follow the instructions of the staff to collect your personal driving training file in order at the waiting area. Bring and present your ID card for inspection by the supervising officer. Mobile phones must be turned off upon entering the exam area. No loud talking is allowed in the exam area. Regulation textbooks are not allowed in the exam area (or must be kept in your bag). After the exam, keep your ID card safe and submit the file to the "Document Submission Window" at the front of the exam room. Candidates who pass the exam should sign under the guidance of the staff at the exit before leaving the exam room. Candidates who fail the exam may leave the exam room and await notification from their driving school regarding the retake schedule.

What Causes Engine Oil to Turn Milky White?

This phenomenon is caused by water contamination leading to oil emulsification. Emulsified oil significantly loses its film strength and can no longer meet the engine's lubrication requirements. Immediate oil change is recommended. The primary cause of engine oil emulsification is coolant leakage from the radiator into the oil pan. Check the engine cylinder cooling system for cracks. Preventive measures for oil emulsification: 1. Warm up the engine: Always warm up your vehicle before driving, and use engine oil suitable for your vehicle. 2. Regular inspection: Frequently check components like the air filter, especially in northern regions and humid areas. 3. Air filter bypass: Route the engine's blow-by tube directly to the atmosphere instead of connecting it to the air filter (ensure the air filter port is sealed). The blow-by tube opening should face downward and be securely fixed to prevent blockage and water ingress during rain.

Trending Ranking

What is the difference between manual and automatic transmissions?

What are the steps for changing engine oil and oil filter?

Which country is Ducati from?

What are the symptoms of tire out-of-roundness?

How to Reset the Immediate Maintenance Reminder on a Volkswagen?

How to Turn Off the Radio in Volkswagen Bora?

Which province is the license plate 'Gui' from?

What is the time limit for reversing into the garage in Subject 2?

Do I need to register for changing from 17-inch to 18-inch wheels?

Can motor vehicles use non-motorized vehicle lanes?

More Forum Discussions

How Long Does the Theory Class for Subject One Last?

Do Sedans Have Lightning Protection Devices?

What type of driver's license is required to drive a 15-seater vehicle?

What Are the Types of Gasoline at Gas Stations?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.