Almost every car enthusiast, in the process of operation, was faced with the fact that the engine troits to hot. The occurrence of this effect can occur for various reasons, depending on the type of power unit, power system, as well as the degree of care and the timeliness of repair. Solving such problems will require some constructive skills and knowledge of the device.
The engine troit on hot: reasons
To determine the main reasons it is necessary to know the design features of the power unit. So, not all motorists are able to identify the cause, as well as independently eliminate the breakdown. Therefore, if the owner of the power plant doubts his abilities, it is recommended to contact the car service directly.
Is it hot on the engine? Define 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 ignition switch.
- The formation of an air-fuel mixture. In this category, the cause is a fuel and air filter, carburetor or injector.
- Depreciation of the motor, namely components such as piston rings, valves or valve stem seals.
- The presence of air leaks for one reason or another.
- Faults related to sensor breakdowns or errors in the engine control unit.
Troubleshooting Methods
It should be understood that for the normal operation of the engine three basic elements are needed: fuel, air and spark. It is necessary to search for the reasons first of all in these constituent elements. As practice shows, a frequent cause is the failure of one of the measuring elements. We begin a phased analysis of diagnostics and methods of elimination, when there is a triple engine.
Spark plugs and armored wire
The first underlying cause is the lack of spark in one of the cylinders. In this case, the candle stops working after heating. Many motorists do not know how to check candles for performance at home.
This is done quite simply:
- We unscrew the candle from the cylinder.
- We put on her armored wire.
- We connect the mass. You can to the body, but you can attach a separate wire.
- Turn on the ignition for a few seconds.
- If the candle works, a spark will appear.
If the spark did not appear the first time, then it is worth trying a second. In the event of its complete absence, it is worth taking another high-voltage wire. If there is still no spark, it means that the matter is in the candle itself, and it must be replaced with a new one.
For a spark plug, it is recommended to always select a vehicle. This will help you get right with the choice of part. It is recommended that after the purchase, check the gaps between the contacts. Each engine will have its own, so you should study the technical literature.
The armored wire also needs to be checked for operability. It should be understood that most elements have a resistance that should be approximately 5 ohms. If the permissible value is less, then the wire is damaged, and the part must be replaced.
Air leaks
Excess air in the cylinders can cause triplets. So, excess oxygen can get into the power unit in several ways: through the punched gasket of the head of the unit, “sucked in” through the gasket of the intake manifold or nozzle.
The most common reason is precisely the breakdown of the cylinder head gasket. To eliminate the malfunction, it is necessary to replace the cushioning 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
Piston ring wear is one of the causes of engine tripping. Many car mechanics recommend the so-called “tossing” process, but this does not always help. Usually, with severe wear on the rings, oil begins to enter the cylinder, which leads to a dirty candle. It is because of this that the engine is troit to hot. In this case, it is necessary to carry out major repairs of the motor, bore the block and set the repair size of the rings and pistons.
The second reason is valves. With severe wear or burnout, a gap forms through which excess gasoline flows. The air-fuel mixture becomes "enriched", which leads to the "choking" of the motor. This effect is most visible when the engine trips when you press the gas pedal. In this case, the most appropriate solution is the overhaul of the cylinder head with the replacement of guide bushings, valves and seats.
Carburetor defective
Many motorists wondered why the engine is tripping at revs, especially in carburetor cars. This is due to fuel supply. With severe wear of the carburetor, the fuel does not flow evenly into the cylinders, but, accordingly, either a lot or a little. In this case, after pressing the gas pedal to overtake, or ahead, the fuel enters the intake manifold unevenly, the engine begins to "suffocate" and shoot at the exhaust.
To eliminate the malfunction, it is necessary to dismantle the carburetor and carry out cleaning with a bulkhead. This will require a repair kit. Most motorists do not apply to 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 adjustment and adjustment of the injection element.
Injector Problems
Injector malfunctions associated with engine tripping will be considered using the Lada engine as an example. In this case, nozzles become 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 “poor” 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 nozzles of the car and carry out diagnostics using a special stand, which will show which part is out of order. The diagnostic operation can be done with your own hands. 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, it will be clear which of the nozzles is spraying fuel incorrectly. Thus, having determined a faulty element, it is worth replacing it and eliminating the reason why the engine on a VAZ is hot on a troit.
Air supply problems
Air supply is an integral element of the component of the formation of the air-fuel mixture. So, due to the wrong amount of air, the engine trips to hot. The main elements that affect this are the throttle and air filter.
A dirty throttle does not provide adequate air throughput. As a result, the throttle can jam in one position, and the motor will cease to function normally. To remedy the situation, it is necessary to dismantle the part from the engine, then clean the element and make sure the valve is working. It is worth noting that cleaning can be carried out by special means, but liquid for cleaning carburetors is also ideal.
Particular attention should be paid to the grid of the mass air flow sensor. It adjusts the throttle position. If dust has accumulated on it, then the recognition of the amount of air that goes into the engine is violated. Accordingly, much more oxygen may be supplied to the power plant than is required. This causes an imbalance in the balance of the mixture. Therefore, when cleaning the throttle, it is necessary to pay attention to the sensor grid and also to clean it.
The air filter must be replaced every 20,000 km. If this is not done, then the motor begins to feel a shortage of air, and in addition to tripling, a number of other malfunctions arise. The way out of the situation is to replace the element. This will help normalize the amount of air supplied to the cylinders and restore the balance of the air-fuel mixture.
Sensors and control unit
If the engine spins at rpm, then first of all it is necessary to look for the reason in the sensors. To check the functionality of the elements, you must connect to the control unit. In car services, this is done using special equipment. At home, you can also diagnose. This will require software for a specific motor, OBD II cable and laptop.
Having connected to the computer, it is necessary to carry out diagnostics, and determine which sensor is the problem. As practice shows, the most common 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 replacement should solve the problem.
Output
The main reason for tripling the power unit is the malfunction of the spark plug. Selection on the car of this component must always be done. This will help to properly configure and adjust the node. Also the fundamental causes of the triple is the lack of the proper amount of air and fuel, which upsets the balance of the air-fuel mixture.