Troit the engine hot: finding the cause and repair

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:41

Almost every motorist, during operation, faced with the fact that the engine troit hot. The occurrence of such an effect can occur for various reasons, depending on the type of power unit, power system, as well as the degree of care and timeliness of repairs. Fixing such problems will require some design skills and knowledge of the device.

Engine troit hot: reasons

To determine the main reasons, you need to know the design features of the power unit. So, not all motorists are able to identify the cause, as well as independently fix the breakdown. Therefore, if the owner of the power plant doubts his abilities, it is recommended to contact the car service directly.

Troit the engine hot? Let's determine the main causes and nodes of the problem:

• Problems in the ignition system. These include spark plugs,high-voltage wires, as well as a coil and an ignition switch.
• Formation of air-fuel mixture. In this category, the fuel and air filter, carburetor or injector will be the cause.
• Wear of the motor, namely such components as piston rings, valves or valve stem seals.
• The presence of air leakage for one reason or another.
• Faults associated with broken sensors or errors in the motor control unit.

Troubleshooting Methods

It should be understood that three main elements are necessary for the normal operation of the engine: fuel, air and a spark. It is necessary to look for the reasons in the first place in these constituent elements. Just as practice shows, a frequent cause is the failure of one of the measuring elements. Let's start a step-by-step analysis of diagnostics and troubleshooting methods when there is engine tripping.

Spark plugs and armored wires

The first fundamental reason is the lack of a spark in one of the cylinders. In this case, the candle stops working after heating. Many motorists do not know how to test candles for performance at home.

This is done quite simply:

1. Unscrew the candle from the cylinder.
2. We put an armored wire on it.
3. Connecting ground. It can be attached to the body, or you can attach a separate wire.
4. Turn on the ignition for a few seconds.
5. If the candle works, a spark will appear.

If the spark did not appear for the first time, then it is worthtry the second one. In case of its complete absence, it is worth taking another high-voltage wire. If there is still no spark, then the problem is in the candle itself, and it must be replaced with a new one.

For a spark plug, selection by car is always recommended. This will help not to miscalculate the choice of details. It is recommended to check the gaps between the contacts after purchase. Each engine will have its own, so it is worth studying the technical literature.

Armored wires also need to be checked for operability. It should be understood that most elements have a resistance, which should be approximately 5 ohms. If the value is less, the wire is damaged and the part must be replaced.

Air suction

Excessive air in the cylinders can cause tripping. So, excess oxygen can enter the power unit in several ways: through a broken head gasket, “suck in” through the intake manifold gasket or injector.

The most common cause is just a breakdown of the cylinder head gasket. To fix the problem, it is necessary to replace the gasket material. To do this, you will have to dismantle the block head. This will allow access to the cylinders and valves, which also need to be diagnosed.

Piston rings and valves

Wear of piston rings is one of the causes of engine tripping. Many car repairers recommend doing the so-called "tossing" process, but this does not always help. Usually with strongWhen the rings are worn, oil begins to enter the cylinder, which leads to dirty spark plugs. This is what causes the engine to run hot. In this case, it is necessary to overhaul the motor, bore the block and set the repair size of the rings and pistons.

The second reason is the valves. With severe wear or burnout, a gap forms through which excess gasoline flows. The air-fuel mixture becomes "rich", which leads to "flooding" of the motor. This effect is most visible when the engine revs when you press the gas pedal. In this case, the most correct solution is to overhaul the cylinder head with the replacement of guide bushings, valves and seats.

Faulty carburetor

Many car enthusiasts wondered why the engine troit at speed, especially in carbureted cars. It has to do with fuel delivery. With severe wear of the carburetor, fuel does not enter the cylinders evenly, but, accordingly, either a lot or a little. In this case, after pressing the gas pedal to overtake, or advance, the fuel enters the intake manifold unevenly, the engine starts to "choke" and shoot into the exhaust.

To fix the problem, it is necessary to dismantle the carburetor and clean it with a bulkhead. This will require a repair kit. Most motorists do not contact a car service for such an operation, but carry out repairs on their own, since the procedure is quite simple. The only subtlety is the setting andinjection element adjustment.

Problems in the injector

Injector malfunctions associated with engine tripping, consider the example of the Lada engine. In this case, the injectors are the most likely cause. Clogging of one of the parts can lead to an imbalance in the air-fuel mixture. This effect is called a "lean" mixture, because there is not enough fuel for normal ignition. It is for this reason that the VAZ engine (injector) is troit.

To fix the problem, it is necessary to dismantle the car's injectors and carry out diagnostics using a special stand that will show which part is out of order. The diagnostic operation can be done by hand. To do this, you will have to remove the fuel rail, but do not disconnect it from the power system. After turning on the fuel supply pump, you will see which of the nozzles is spraying fuel incorrectly. Thus, having determined the faulty element, it should be replaced and the reason why the engine on the VAZ is running hot.

Air supply problems

The air supply is an integral part of the air-fuel mixture formation. So, due to the wrong amount of air, the engine troit hot. The main elements that affect this are the throttle valve and the air filter.

Dirty throttle does not give proper airflow. As a result, the throttle can jam in one position, and the motor will stop functioning normally. Toto correct the situation, it is necessary to dismantle the part from the engine, then clean the element and make sure that the valve is working. It is worth noting that cleaning can be done with special products, but carburetor cleaning fluid is also ideal.

Special attention should be paid to the grid of the mass air flow sensor. It controls the throttle position. If dust has accumulated on it, then the recognition of the amount of air that goes into the engine is impaired. Accordingly, much more oxygen than is required can enter the power plant. This causes an imbalance in the mixture. Therefore, when cleaning the throttle valve, it is necessary to pay attention to the sensor grid, and also clean it.

The air filter must be changed every 20,000 km. If this is not done, then the motor begins to feel a lack of air, and in addition to tripling, a number of other malfunctions occur. The way out is to replace the element. This will help to normalize the amount of air supplied to the cylinders and restore the balance of the air-fuel mixture.

Sensors and control box

If the engine troit at speed, then first of all it is necessary to look for the cause in the sensors. To check the functionality of the elements, you need to connect to the control unit. In car services, this is done using special equipment. At home, you can also diagnose. This will require engine-specific software, an OBD II cable, and a laptop.

Having connected to the ECU, it is necessary to diagnose and determine which sensor has the problem. As practice shows, most often the malfunction lies in the mass air flow sensor. We dismantle the car part and carry out diagnostics using a conventional tester. If the meter is "dead", then a replacement should fix the problem.

Conclusion

The main cause of powertrain tripping is a faulty spark plug. The selection of this component by car must always be done. This will help to properly set up and adjust the node. Also, the fundamental causes of tripling are the lack of the proper amount of air and fuel, which upsets the balance of the air-fuel mixture.