The spark plug is the heart of the engine. Although it is small, once it has problems, it will lead to engine misfire, inadequate combustion, carbon deposition and other problems. I found that the engine had some symptoms before the spark plug went wrong. Let's see next.

1. No output of oil supply

When you are driving, if you find that the acceleration is weak, or you feel that the engine vibrates abnormally when you step on the accelerator, it is likely that the performance of the spark plug is reduced.

The performance of spark plug will lead to poor ignition, insufficient combustion or even misfire. At this time, one or more cylinders may stop working, so the engine will be jerked or unable to give oil.

2. Waiting for the red light to "asthma"

When parking at a red light, sitting in the car and holding the steering wheel with your hand, you can feel the regular shaking of the engine, just like "asthma". But sometimes when the engine speed is higher than the idle speed, the jitter phenomenon disappears, and there is no jitter when stepping on the accelerator. Such idle jitter phenomenon can indicate that the performance of spark plug has begun to decline. It can be considered whether the spark plug has reached the replacement cycle. In addition, the poor quality of the spark plug can also cause jitter.

Of course, the obvious jitter of the engine is not necessarily caused by the spark plug, but also may be caused by the aging or excessive carbon deposition of the floor mats. In this case, it is recommended to go to the repair shop to find out the root cause of the problem.

3. Difficulty in starting or sudden fire

If the engine is difficult to start, it is obvious that there is a problem with the ignition. If the reasons for the general difficulty in ignition in winter or the poor maintenance of the engine can be eliminated, then it can be considered whether there is a problem with the spark plug.

If there is an unexplained fire, it is likely that more than two cylinders have stopped working, which is likely that there is a problem with the spark plug.

Last

After a certain mileage is exceeded, the performance of spark plug will decrease obviously, which leads to many secondary faults of engine. Generally speaking, the spark plug is made of nickel alloy, platinum, iridium and other materials. Iridium is the most durable one. It's easy to replace 80000 km without pressure. I recommend iridium spark plug!