Last Updated on 22 July 2024 by Technical Education
Overheating
Engine overheating is a bigger issue in automobile engines. The engine is the main part of your vehicle, If it is clogged then you will face bigger problems. In this article, I will discuss the various reasons for engine overheating issue and their solutions. The remedies for these troubles are not given because they are self-understood to the cause. Let us take a look
Abnormal Condition in Ignition System-
Ignition timing out of adjustment-
Ignition timing refers to the precise moment when the spark plugs ignite the air/fuel mixture in an internal combustion engine. If the timing of ignition is “out of adjustment,” it means that the timing is either too advanced (spark occurs too early) or too retarded (spark occurs too late), causing a disruption in the engine’s normal operation. This can result in decreased performance, decreased fuel efficiency, and increased emissions.
Wrong heat value of spark plugs-
Distributor breaker point gap-
The breaker point gap is the gap between two breaker points in a mechanical ignition system. The breaker points are responsible for interrupting the current flowing from the ignition coil to the spark plug, which generates the spark that ignites the fuel in an internal combustion engine. It is important to set the gap correctly, as an incorrect gap can cause issues such as misfiring, If the gap is out of adjustment then the timing will be incorrect, and the heat can be increased inside the cylinder. This will also cause damage to engine parts.
An abnormal condition in Fuel and Exhaust System-
Float level sets too low-
Clogged jets in carburetor-
Clogged exhaust ports-
Clogged exhaust ports can increase the temperature of an engine for several reasons. The most important of which is that a clogged exhaust system restricts the flow of exhaust gases out of the engine. This will increase the pressure in the cylinder. The exhaust system plays an important role in removing heat from the engine, and if it is clogged, the engine will have a harder time dissipating heat, leading to a rise in temperature.
An Abnormal Condition in Cooling System-
Not enough coolant-
Loose or broken fan belt-
A loose or broken fan belt can cause an increase in the temperature of the engine cylinder due to a lack of proper cooling. If the fan belt breaks or slips(loose), the cooling fan will not operate. It will decrease cooling efficiency and increase engine temperature.
The problem with thermostats-
The erracical working of the thermostat valve can cause an increase in engine temperature by preventing the proper flow of coolant. The thermostat valve maintains the working temperature of the engine. If the thermostat valve becomes stuck in the closed position, it can prevent coolant from flowing through the engine, leading to decreased cooling efficiency and an increase in engine temperature.
Poor water pump performance-
The water pump is responsible for circulating the coolant throughout the engine. It dissipates heat and regulates engine temperature. f the water pump bearings are damaged, it can cause the pump to operate noisily or even seize, completely stopping the flow of coolant, leading to decreased cooling efficiency and an increase in engine temperature.
An Abnormal Condition in Lubrication System-
Clogged oil filter-
A clogged oil filter can cause an increase in engine temperature due to the restriction of oil flow. When the engine is not adequately lubricated and cooled, it can lead to increased friction and heat buildup in the cylinder. If the engine temperature becomes high enough, it can cause the oil to break down.
Clogged oil strainer-
A clogged strainer can cause an increase in engine temperature. The engine generates heat during the combustion process, and it’s the job of the cooling system to remove that heat. If it is clogged then the strainer will resist the flow of the oil. It can lead to decreased cooling efficiency and an increase in engine temperature.
Oil leakage from oil pump-
If the oil pump or oil pan is leaking, it may not be able to provide sufficient lubrication to the engine components, including the cylinder walls. The Friction between metal components can generate temperature in the cylinder.
Wrong kind of lubrication oil-
Lubricating oil has a specific viscosity, if the oil used has a viscosity that is too low, it will not provide enough protection to the engine parts and result in increased friction. If the friction will increase then the temperature will also increase. Using low-quality oil can lead to the formation of sludge and varnish deposits in the engine, and increased engine temperature.
Other Problems-
Dragging brakes-
Brake drag can cause the engine to work harder and run at a higher RPM. It can reduce the effectiveness of engine cooling. When brakes are dragging, they are continuously generating friction and heat. Then the temperature in the brake fluid also increased. The brake fluid also needs to cool down then the cooling process will hamper and result in increasing the temperature in the cylinder. The brake drag can cause the vehicle to slow down, reducing the amount of airflow over the engine.
Slipping clutch-
When a clutch is slipping, it generates friction. Heat is also increased in the clutch plate rubs against the flywheel. This heat is transferred to the clutch housing and can then be transferred to other parts of the engine. This will be causing an increase in engine temperature. When a clutch slips, it can cause the engine to run at a higher RPM. Which can reduce the effectiveness of the engine cooling system. If the cooling will hamper then the temperature of the engine also increase.