Overheat Engine due to bad cylinder block – Honda City VTEC 2006

Overheat Engine due to bad cylinder block – Honda City VTEC 2006 – In this article, I will discuss a case of engine overheating on a 2006 Honda City VTEC car. This car broke down while traveling uphill. The owner initially only thought the problem was leaking radiator water and only needed to add radiator water, but it turned out that the engine was completely dead and we had to tow it to get to the workshop.

Overheat Engine due to bad cylinder block – Honda City VTEC 2006

At first, we saw a leak in the radiator. As usual, the treatment when the radiator water runs out we will add the radiator water with water in full. In the next step, we start the engine while the radiator cap is still open. And sure enough, the radiator water gushed out of the radiator very badly.

Overheat Engine due to bad cylinder block
This is the engine condition when normal for Honda City VTEC 2006 automatic transmission. Overheat Engine due to a bad cylinder block will destroy this engine.

What does it mean when the water gushes out when we start the car? The meaning of the jet of water when we are starting the car is that there is a large compression leak in the engine. Since we initially stated that this car had an engine overheating, it was clear that we could suspect that the cylinder head was damaged.

Cylinder head damage is usually due to warping. The warping of the cylinder head is due to the heat being too high and the cylinder heat material being unable to withstand the heat. Another possibility of damage is that the cylinder block also experienced the same thing as the cylinder head, which was curved. Even though the cylinder block is large, in some cases it is clear that a curved cylinder block has occurred.

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Apart from these two possibilities, engine overheating clearly damages the cylinder head gasket. We can make sure the gasket is damaged and we must replace it with a new one.

We next disassemble the cylinder head. And it turns out that the problem is actually found. The cylinder head is curved but the cylinder block is not. Although not curved, the cylinder block really had a problem this time.

The cylinder block is badly damaged. Almost all parts are porous and almost impossible for us to reuse. With this condition, we have to lower the engine and we have to repair the cylinder block and cylinder head at the same time. After that, we just do the assembly again.

The details of the problem are in the following video.

 

What is Engine Overheat?

What is Overheat in Cars and Motorcycles? Let’s Peel Completely About Overheat We often hear the word “overheat”, this word is often intended for vehicles such as cars or motorcycles as well as electronic goods such as laptops. Then what exactly is the meaning of overheating? what is the result of overheating? And what causes overheating? Let’s discuss them one by one.

Understanding Overheat in Vehicles?

Overheat is a syllable from English which when translated will give two words, namely Over = excess, and Heat = hot.
So that it can be said, overheating is a condition that experiences excessive heat. However, what components are often exposed to overheating? in motorized vehicles, the overheating condition refers to the engine experiencing overheating.

What are the consequences of an overheated engine?

The engine does work to convert chemical energy (combustion) into motion energy. The result of burning it will certainly generate heat. So the engine and heat are two things that cannot be separated.

Causes of Car Engine Overheating

Although basically a car engine is designed to work at high temperatures, every engine component has a temperature range to work optimally and can be damaged if the temperature inside the engine is too high, or what we often hear is overheating.

Overheat Engine due to bad cylinder block
Overheat Engine due to bad cylinder block. Source: Youtube

Overheating can attack any type of car and anywhere if the engine cooling system cannot work optimally to remove heat from the engine.

The following are things that can cause an engine to overheat, which I summarize from the book Automotive Engines: Theory and Servicing by James D. Halderman and the book Auto Repair for Dummies by Deanna Sclar.

Low radiator/coolant water level

An insufficient amount of coolant will reduce the amount of heat that can be removed from the combustion chamber.

A dirty or clogged radiator

Rust and sediment can clog the drains in the radiator and prevent coolant circulation.

Faulty cooling fan

Damage to both the fan blades and the drive motor can reduce the radiator’s ability to cool the engine, especially when the car is stationary in a traffic jam.

Ignition timing late (if adjustable)

Spark plugs that ignite too late when the piston has started to descend can increase the temperature in the combustion chamber.

Although timing errors cannot significantly increase engine temperature, when combined with other problems it can bring the engine in critical condition.

Low engine oil level

Not only works as a lubricant, engine oil is also useful for removing residual heat from the engine.

Damage to the radiator cap/pressure cap

A damaged gasket on the radiator cap can cause a loss of pressure in the cooling system so that the coolant’s boiling point decreases and causes the system to not work optimally.

Brakes that remain active / attached even without stepping on the pedal

Brake pads/shoes that remain attached to the rotor or drum can make the engine work heavier.

Malfunction of the thermostat

The function of the thermostat is to regulate the coolant flow according to the engine’s optimal temperature range.

Damage to the water pump

The water pump functions to circulate coolant to all parts of the engine cooling system. Blockage of coolant flow in the engine block and cylinder head

Accessory belt loose or slip

The accessory belt plays an important role in turning the water pump and radiator cooling fan.

Damage to the lower radiator hose

Although the lower radiator hose is reinforced with wire coiled inside, sometimes the hose can be damaged due to the vacuum pressure from the water pump inlet.

Head gasket damage

Head gasket leaks cause coolant to enter the combustion chamber and be burned, or combustion gases with very high temperatures enter the engine cooling system.

What are the consequences of an overheated engine?

The engine does work to convert chemical energy (combustion) into motion energy. The result of burning it will certainly generate heat. So the engine and heat are two things that cannot be separated.

  1. Seal damage that triggers oil leakage – Seal is a sealing component between two components that are connected to each other. Usually, this seal is made of rubber, but the nature of the rubber will be damaged if it is heated excessively. Thus, the seal will be damaged and engine oil can leak.
    Melt the plastic components around the machine.
  2. Today’s car engines, almost all of them use electronic technology. As a result, on the engine, we will find a lot of sensor wires. This cable is made of rubber and gets a plastic shield. In addition, on the sensor, there are also components that melt easily. Precisely on the sensor socket. So that excess heat in the engine has the potential to melt all plastic components near the engine.
  3. The engine breaks down due to component expansion – The nature of the metal will expand when exposed to heat, the higher the heat received, the greater the expansion that occurs in the metal.
  4. In engine, almost all vital components are made of machines. Examples of pistons, cylinder blocks, crankshafts, and other components. If overheating occurs, the engine block will expand so that the diameter of the cylinder block will decrease, then the piston will also expand so that the piston diameter will increase.
    When the cylinder diameter decreases and the diameter increases, the piston lock will occur. That is where the piston is locked in the cylinder because the diameter of the piston should be smaller than the diameter of the cylinder, what happens is that the diameter of the piston equals the diameter of the cylinder. So the piston can not move. This will cause the engine to crash and not start.

Car Engine Overheat Sign

One of the problems with cars is overheating, where the engine temperature turns very hot. This not only interferes with driving comfort but also safety on the road because the engine can catch fire. The cause of the car overheating is due to lack of maintenance, especially on the radiator water system (water coolant) and cooling fan (coolant fan). Many drivers neglect and underestimate the radiator check.

Overheat Engine due to bad cylinder block
There is a temperature indicator on your dashboard when the engine overheats. Including Overheat Engine due to bad cylinder block.

How to know the signs of a car overheating? Reported from the Auto2000 page, the following reviews:

1. The temperature signal on the instrument is on

Buy a Car That Has a Toilet Generally the simplest and easiest signs to know are by looking at the instrument panel on the car’s speedometer. When the temperature indicator lights up immediately pull the car to the side of the road. Check the engine room, this is usually caused by running out of radiator water.

2. The car air conditioner is not cold

The characteristics of the radiator water problem, the car air conditioner suddenly doesn’t cool and only blows the wind. If that happens immediately move to the side of the road, stop the engine and check the engine cooling system. Is there a leak, the radiator cap is off, the thermostat is stuck or the radiator water has run out so the engine becomes hot due to lack of cooling.

3. There is a tickling sound

Generally, a very hot engine will produce a rough sound like tickling the engine. This is because the engine overheats and makes combustion management in the engine room chaotic and imperfect.

4. Car power is lost

If there is overheating, the vehicle’s performance will decrease. Usually, the car will be reduced. It can even cause fatal damage if the user forces himself to drive the car.

5. Smoke appears on the hood

If the condition is severe, it will appear from the hood. This can be caused by the radiator water bursting out very hot and causing steam in the engine. If you leave the engine will be damaged and a fire may occur.

At what temperature is the engine said to be overheating?

The engine is said to be overheating if the temperature exceeds the working temperature of the engine. The working temperature of the machine is the temperature at which the machine can work most effectively, generally, the working temperature of this machine is between 80 and 95 degrees Celsius. If the temperature is still within the limit of 95 to 98 degrees, it hasn’t shown any effect, so turn off the engine and quickly fix the problem.

The First Step When Overheated

When you detect the needle is pointing to the red level, then immediately drive over to your car, don’t wait until the needle is stuck. When the car stops, don’t turn off the engine. Open the hood, then observe whether the fan is on or not. If the fan is off, that’s the problem. But if the fan is still normal (rotating) there may be a problem with the cooling water. Turn off your engine, then wait about 10 to 20 minutes for the engine temperature to drop.

When the engine temperature has dropped, you can immediately check the cooling water volume. But this is a bit dangerous because when you open the radiator cap/reservoir cover there will be a jet of cooling water due to high pressure. For the solution, you have to open the lid with a coated cloth. You do not immediately open it, but loosen the lid slowly until the pressure in the cooling water runs out. If there is no pressure from the inside, you can open it and fill it with water.

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