Bad start on a hot injector. Why hot bad start?

Modern car engines are not just power mechanism, and present a complex organism that requires perfect working conditions. If any item will not work as it should, then there are various symptoms of engine failure. A common problem is when the engine does not start hot.

This means that in the morning the car starts with a twist, but it is necessary to Park for a few minutes at the store, to get it back will be difficult. There are several possible failure. Let's look at each of them.

What to do if you don't start the engine hot?

Note that the problematic symptoms of the motor starting are manifested in different ways. Some cars refuse to run at all until the complete cooling of the power plant. The others run on the fourth attempt, and some of the motors have to spin for 20-30 seconds for a full run.

What to do in this case? Need to find the problem and repair, replace poorly functioning element of the engine or repair it. Note that a similar fault may be the harbinger of more serious damage, so better to solve it at an early stage.

Bad fuel as a possible problem

Flooding low-quality gasoline or diesel fuel, it is not surprising why the engine is bad on hot start. That is fuel – the most common cause of poor engine starting. It is easy to check. Just vegetate all the fuel and add new, higher quality. If you refueled with gasoline A92, you can try to fill in A98 and see how the car will go. In the case of diesel fuel it is necessary to change the dressing and to choose the more reliable the seller.

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With the motor can be such a problem:

1. The high content of additives in the fuel that are poorly perceived by the engine.
2. The Pump is difficult to pump the required amount of fuel due to clogged filters.
3. Settings of the motor control lost. It is also possible to inaccurate operation of the feed air mixture.
4. Valve idle speed sensor and mass air flow can cause.
5. Run carbureted engines. Being too hot, they do not start.

The Last paragraph does not apply to fuel injected engines. Just have a carbureted engine is such a feature that they do not start hot. This is because the carburetor is heated to very high temperatures. Diesel under the influence of temperature, it evaporates and fills the gas chamber and tubing of the carburetor. When this float chamber is empty. And if you run the motor 5 minutes after the engine stop, it is possible to encounter a problem starting it, because in the combustion chambers will not be a liquid fuel. This is normal and this problem can be solved either by manual pumping of fuel, or multiple attempts to start the motor. In injection power plants, this problem is eliminated, because there fuel is delivered to the combustion chamber directly from the trunk.

The Problem is in the pump

The fuel Pump in the car has no special cooling. He is in the tank and is cooled by the gasoline, and if gasoline in the tank low, the pump may overheat. Therefore it is not recommended to drive at a burning light bulb “Refill”. Also in the heat of the fuel in the tank heats up as the fuel pump during operation. All together this leads to the fact that in the process of pumping the petrol pump gets very hot and refuses to start until then, until cool. The pump may refuse to work even during the movement: it just stalls. If the motor is bad on a hot start the pump, the masters recommend:

1. To Replace it. This is a simple and correct decision. The cost of the pump is small-about 1000 rubles. Also have to pay 500 rubles for his replacement.
2. Allow to cool the pump and try again to start the motor.

The Problem with the CKP sensor

Another common element, which affects engine starting “hot” is the CKP sensor (crankshaft position sensor). Quite often it refuses to work when the engine temperature increases. This is one of the elements, without which it is impossible for the whole system. After replacing the CKP sensor everything comes back to normal many car owners. So when your car bad on hot starts, it makes sense to try to replace this sensor. It costs pennies (new in the area of 500-600 rubles, although you can look and used). To replace even by yourself, just need to know where it is and to have a handy screwdriver. To know its location in every car is not the problem – all information is in the Network.

Problem to run on gas

HBO is settled under the hood of many cars. This system allows you to considerably save money, but it is quite capricious. If your engine runs on gas, and after a small idle problems with the launch, it is best to contacton the SRT. Reasons why hot bad the engine is started, may be different. We can not exclude the situation when the expansion of gas in the tank has created additional pressure, causing the ratio of gas and air mixture changed. This may be the cause of a poor running motor on hot. The same the crankshaft position sensor also should not be excluded. It may not work regardless of, running the engine on gas or gasoline.

In conclusion

If you find that the injector is bad on a hot start, it is advisable to contact the service center. People are not able to identify the cause and especially to eliminate it. Online tips won't help, unless you can accurately and in detail describe your situation on the forums. Each individual engine, even the same brand of car, is a unique individual organism, and its failure may be atypical for the other engines.

We only described the basic elements of system of the internal combustion engine that may be faulty in the first place with such damage. Accurate “diagnosis” put on the SRT. But also note that many owners do not pay attention to it and calm myself go for many years.