What Happens If Car Spark Plugs Are Not Replaced for a Long Time?
2 Answers
The effects of not replacing car spark plugs for a long time are: 1. Increased fuel consumption and loss of vehicle power; 2. Difficulty in starting the car, accompanied by severe shaking during ignition; 3. Damage to the car's catalytic converter, leading to excessive exhaust emissions. A spark plug consists of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. The steps to replace spark plugs are: 1. Allow the engine to cool, open the hood, unplug the ignition coil connector, remove the mounting bolts, and take out the ignition coil; 2. Loosen the spark plug nut by turning it counterclockwise and extract the spark plug; 3. Use a magnetic rod to hold the new spark plug and insert it into the hole, then reinstall the ignition coil.
After driving for a few years, I finally realized the importance of spark plugs. If you don't replace them for a long time, the car will be particularly difficult to start, sometimes requiring several attempts to ignite successfully. Driving on the road feels powerless, acceleration is very sluggish, and even climbing a small slope is strenuous. Fuel consumption increases significantly—my fuel consumption per 100 kilometers rose from 7 liters to 9 liters, costing me much more on gas every month. What's even more annoying is that the engine shakes violently, making the whole car tremble at red lights. The mechanic warned me that severely worn spark plug electrodes can accumulate carbon deposits, clog the catalytic converter, and eventually lead to major engine repairs. In fact, replacing spark plugs is very simple; doing it every 40,000 kilometers is enough. Don't wait until it affects driving safety like I did—only to regret it later.
