Perfect combustion in car engines has a significant impact on car performance during maneuvers. Of course, the car will be more powerful and faster. So how can you tell if the engine combustion is perfect or not? Are there any specific signs that can be recognized? Instead of being curious, let’s pay attention to the following discussion. 

Signs of Perfect Combustion in Car Engines

There are several signs that you need to know when the engine combustion is perfect. Here are the complete signs.

1. Spark plugs emit blue sparks

The first sign, perfect engine combustion can be seen from the sparks produced by the spark plugs. As is known, spark plugs play a significant role in the success of engine combustion. If the sparks produced are blue, it indicates that the combustion is perfect. You can see the sparks in the area of the spark plug electrodes. 

2. The color of the spark plug electrodes turns brown

The second sign can be seen from the color of the spark plug electrodes. Perfect engine combustion usually affects the color of the spark plug electrodes to turn brown. This color change occurs due to the mixing of fuel and air in the engine's combustion chamber. This perfect mixture will change the white tip of the spark plug electrode to brown.

Read Also: Differences Between Internal and External Combustion Engines and Their Examples

3. The engine does not make knocking sounds

The third sign can be identified from the sound produced by the car engine while driving. Incomplete engine combustion often causes knocking sounds in the car engine. This sound is usually caused by poor spark plug quality or worn spark plugs that cannot produce sparks properly. Meanwhile, perfect combustion makes the engine sound smooth and not vibrating.

4. The lifespan of the spark plugs is extended

The fourth sign can be seen from the lifespan of the spark plugs. As is known, quality spark plugs are usually replaced when the car has traveled 20,000-40,000 km. Perfect engine combustion can make the lifespan of the spark plugs match or exceed the standard usage lifespan. In contrast, incomplete engine combustion can damage the spark plugs even if the car has only traveled 2000 km.

5. The exhaust smoke emitted by the car is not black

Perfect engine combustion also affects car exhaust emissions. Perfect combustion will produce normal exhaust smoke (not black). This is certainly very necessary to prevent increased air pollution. 

6. Fuel consumption becomes more economical

The next sign can be seen from the car's fuel consumption. Perfect engine combustion can make fuel consumption economical. Why is that? Because perfect combustion makes the composition of the fuel and air mixture in the combustion chamber just right. As a result, fuel usage meets the required standards and is not wasted. 

7. Car performance improves

Perfect combustion in car engines also greatly affects the quality of engine performance. The car will become faster because the engine can achieve maximum power and torque according to manufacturer standards. 

Thus, here are some signs that you can use as a reference to determine whether your car's engine combustion is perfect or not? To achieve this, don’t forget to perform regular checks and routine maintenance of car components. Replace spark plug components when they start to wear out. Make sure to use original and quality spark plugs.

To obtain quality car components and proper car maintenance, you can visit Daihatsu workshops. Don’t forget to use fuel with octane levels that meet standards or higher.