The engine of a vehicle is definitely fatally damaged once water gets in. Once a car engine takes in water, in mild cases, the spark plug cannot be ignited and the engine may even stall directly. In severe cases, the engine may blow up. No matter which situation it is, car owners definitely don’t want to encounter it. So how can we judge if the engine has taken in water? And how should we deal with its harm?
How to judge if the engine has taken in water?
Since most people understand the harm of water getting into the engine, how can we determine if the engine has taken in water? The simplest method is to check if the color of the engine oil is abnormal. If the engine oil turns milky white, it means that there is water in the fuel tank or the engine.
Secondly, check whether each pipeline has taken in water. This includes checking whether there are obvious traces of water in the air filter and the lower housing of the air filter, and checking whether there are obvious traces of water in the intake pipe and the intake manifold. Finally, check whether there are carbon deposit traces on the spark plug and the engine cylinder wall. Remove the spark plugs of each cylinder and check if they are wet. When the engine is working normally, the pistons of each cylinder reach the top dead center at the same position, and the top dead center position (compression clearance) on the cylinder wall is clear. When the engine takes in water, due to the incompressibility of water, the piston cannot reach the original top dead center position, the piston stroke becomes shorter, and the top dead center position will shift down significantly.
As we all know, when a vehicle wades through water, water enters the cylinder through the intake manifold. Due to the incompressibility of water, the piston stroke will become shorter, resulting in the bending or breaking of the engine connecting rod. In extreme conditions, the broken connecting rod may fly out and pierce the cylinder block. The reason why a car stalls in water is that after the distributor cap takes in water, the distributor loses its normal ignition function. The air filter element of the engine is soaked, resulting in increased intake resistance and water entering the combustion chamber, and the spark plug cannot be ignited. If the engine is restarted at this time, it is very easy to blow up the cylinder.
If water gets into the engine, water will also get into the engine oil, which will cause the engine oil to deteriorate and change its original performance. In this way, the engine oil cannot perform its functions of lubrication, cooling, sealing, and anti-corrosion, and ultimately it is the engine that is damaged.
How should we repair the engine once it takes in water?
When we are driving a car, if an accident causes water to enter the engine, how should we repair it?
If the engine only mixes with water vapor and takes in water from the air filter, there is not much of a problem at this time. We only need simple treatment. Clean up the water vapor in the air filter, throttle valve, and cylinder.
If the engine takes in more water, but it does not affect normal driving. It just makes a louder noise. There may be a small amount of water in the engine oil and gasoline. We need to change the engine oil and clean the relevant engine parts.
If there is a lot of water intake and the engine has already taken in water instead of just having a lot of mixed water. However, the car has not been started and the engine has not been damaged. We need to drain the water completely, clean it up inside, reassemble it and change the engine oil. But the electrical system is not very safe.
Finally, in the situation where there is a lot of water intake and the car cannot be driven after starting. At this time, the cylinder, connecting rod, piston, etc. of the engine have been deformed. It can be determined that the engine has been scrapped. We can only replace it with a new engine or directly scrap the car.
2.Automotive Chassis Components: The Foundation of Vehicle Performance and Safety
The performance and safety of a car largely depend on the quality and design of its chassis components. The chassis is like the skeleton of a car, supporting and connecting all the key systems of the vehicle.
I. Definition and Composition of the Chassis
The automotive chassis refers to the vehicle frame that supports the engine, transmission, cab, and cargo, and is equipped with all the assemblies necessary for the car to run. Generally, the chassis mainly includes the following parts:
1. Suspension system: Responsible for absorbing the shocks caused by uneven road surfaces and ensuring good contact between the wheels and the ground to provide stable handling.2. Drivetrain system: This system includes the drive shaft, differential, etc., and is responsible for transmitting the power of the power unit to the wheels.3. Braking system: Composed of brake discs, brake drums, brake pads, etc., it is a key component for vehicle deceleration and stopping.4. Tires and wheels: Directly contact the ground and provide necessary traction and lateral forces.5. Steering system: A system that allows the driver to control the direction of the car, including components such as the steering rack and steering knuckle.
II. Value Advantages of the Chassis
1. Improve driving stability and safety2. The quality of chassis components directly affects the driving stability of the car. A high-quality suspension system can effectively reduce the impact of road bumps on the vehicle body and ensure tire-ground contact under various road conditions, thus providing precise handling. At the same time, a responsive and reliable braking system can stop the vehicle quickly in an emergency, greatly improving driving safety.3. Enhance comfort and driving experience4. The design of the chassis also determines the comfort of driving and riding. Good chassis tuning can balance ride comfort and handling precision. In addition, high-quality tires and wheels can not only reduce driving noise but also enhance the overall aesthetics of the vehicle.5. Strengthen power performance and fuel economy6. An efficient drivetrain system can reduce power loss and optimize power transmission efficiency. This not only improves the acceleration performance of the car but also helps reduce fuel consumption and achieve economical and environmentally friendly driving.7. Ensure durability and maintenance cost8. Durable chassis components reduce the frequency of repairs and replacements, reducing long-term maintenance costs for car owners. High-strength and high-quality materials and components are crucial for improving the overall durability of the vehicle.
III. How to Maintain Chassis Components
Regularly inspect the suspension system1. The suspension system is a key component for reducing vibrations and shocks during driving. During maintenance, check for oil leaks in the shock absorbers, whether the springs are broken or deformed, and whether the ball joints and suspension arms at the suspension connection points are loose or damaged.
Inspect and replace tires
1. During each maintenance, check the tread depth of the tires to ensure it is above the legal minimum depth. Uneven wear may indicate problems with the suspension system or tire pressure and needs to be adjusted in time. At the same time, inflate the tires according to the manufacturer’s recommended values and rotate the tire positions regularly to ensure even wear.2. Check the braking system3. During each maintenance, check the wear of the brake discs and brake pads to ensure they are within the safe usage range. In addition, check the fluid level and condition of the brake fluid to ensure there is no leakage and replace the brake fluid according to the manufacturer’s recommended cycle to maintain the best performance of the braking system.4. Check the steering system5. Any problem with the steering system will lead to difficulties in vehicle control and increase the risk of accidents. During maintenance, check whether the fasteners, tie rods, racks, gears and other components of the steering system are loose or damaged. At the same time, check whether the power steering system (such as hydraulic pump, belt, etc.) is operating normally to ensure that the steering system is flexible and accurate.
Check and lubricate key parts of the chassis
1.Components such as rubber bushings, ball joints, and connecting rods on the chassis will gradually wear out during driving. Lubricating these components can reduce friction and extend service life. Using professional chassis armor or anti-rust materials can protect the chassis from corrosion. Vehicles driving in humid or saline-alkaline environments should pay more attention to this.
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