Automobile engine backfire has a great influence, how to solve it quickly?

Introduction: Automobile engine tempering has a great influence, how to solve it quickly? What is the reason? Let's take a look with Bian Xiao!

I. Reasons

There are many reasons why the mixture is too thin. For example, the engine oil circuit failure leads to the insufficient concentration of the mixture entering the cylinder, and the engine keeps injecting fuel, but the excessive intake air leads to the dilution of the mixture, and the problem of the engine temperature sensor can also lead to the failure. Ignition timing, valve timing and engine ignition advance angle are important parameters of engine working conditions, and ignition advance angle directly leads to different engine working conditions. Generally, high-grade engines will adopt the technology of secondary injection when the car is cold and idling fast, so that the engine can enter the working state as soon as possible. At this time, the importance of ignition advance angle is self-evident.

Second, troubleshooting.

In the case of inlet pipe tempering, in order to judge whether the inlet system and exhaust system are leaking or blocked, the air filter and exhaust pipe can be disassembled first, and then the test run can be carried out. If the backfire phenomenon of intake pipe is not improved, it shows that the fault is not caused by the leakage of sub-intake pipe, which leads to the lean mixture or the blockage of exhaust pipe, but by the incorrect ignition timing or valve timing. When the exhaust pipe is blocked, the back pressure increases and the vacuum degree of the intake pipe decreases, which easily leads to insufficient exhaust, unstable engine speed, weak acceleration and tempering of the intake pipe.

Third, the solution

The engine backfire fault is mainly caused by the lean mixture and slow combustion speed. When technicians check the faults, the focus is on the air intake and combustion system. If the oil pressure of the oil pump is low or the gasoline filter element is blocked, the actual fuel injection quantity of the automobile will be reduced, the mixture will still be too thin, and the throttle will still backfire. You can measure the pressure of the oil pump with an oil pressure gauge. If the pressure is normal, replace the gasoline filter. Of course, according to the order from simple to difficult, replace the gasoline filter first, and then test the oil pump.