[Car spark plug replacement] How often should the car spark plug be replaced?
How often should spark plugs be changed?
If you find that the fuel consumption of the vehicle increases, you can consider whether to replace the spark plug. Generally, the repair shop will recommend replacing it at 20,000 to 30,000 kilometers, because the spark plug is not completely damaged at this time, but its efficiency has declined. In fact, this depends on the quality of the spark plug. The ordinary spark plug can be replaced every 30,000 to 40,000 kilometers, and the platinum and iridium can be replaced every 60,000 to 80,000 kilometers. Usually in the tens of dollars to one hundred dollars. Find a reliable repair shop for installation. The installation process is very short, and you can usually check it yourself, which can save money and prevent the black-hearted repair shop from reusing the half-new spark plugs removed from other people’s cars.
How to see if the spark plug should be replaced?
1. Real vehicle inspection: It is best to operate under the guidance of professionals. The owner of the car understands this kind of common sense. In order to identify the maintenance recommendations of professionals, it is best not to do it yourself.
(1) Short circuit: let the engine run at idle speed, use a screwdriver to short-circuit the spark plug cylinder by cylinder, and listen carefully to the changes in engine speed and sound. The speed and sound change significantly, indicating that the spark plug is normal. When the speed and noise are not obvious, the spark plug has been in an abnormal state.
(2) Sparking: Unscrew the spark plug, put it on the cylinder block, and test the fire with a high-voltage wire. If there is no spark or the spark is weak, it means that the spark plug is leaking or not working.
2, observe the appearance color: The owner can learn this method, after the maintenance personnel remove the spark plug, they can judge and check by themselves.
Remove the spark plug and observe, and judge the usage status of the spark plug according to the following appearance color observation:
(1) If it is russet or rust, it means the spark plug Normal;
(2) If it is oily, it means that the spark plug gap is out of balance or too much oil is supplied, and the high-voltage line is short-circuited or open;
(3) If it is smoked black, it means that the hot and cold type of the spark plug is wrong or the mixture is thick and the oil is running up;
(4) If it is at the top There is a deposit between the electrode and the electrode. When the deposit is oily, it proves that the cylinder is blowing oil and has nothing to do with the spark plug; if the deposit is black, it means that the spark plug has carbon deposits and bypasses; the deposit is gray because the additive in the gasoline is covered.
(5) If the spark plug is severely ablated, the top has scars, black lines, cracks, electrode melting, etc., which indicates that the spark plug is damaged and must be replaced immediately.
Summary: The maintenance and replacement of spark plugs should be done in the process of daily car use. Do not remove carbon deposits for a long time, avoid descaling at will, and avoid burning. This extends spark plug life and ensures economical and safe engine operation.
