The gasoline generator is always switched off first, and then switched off when the power is supplied.

In normal use, the common faults mainly include the following:

I. Insufficient oil supply

Insufficient oil supply is one of the most common faults of gasoline engines, which often occurs in on-site construction, and its performance is because of lack of oil.

Degree and fault location. First, the main metering hole is blocked, resulting in insufficient oil supply. The speed of this machine has been fluctuating since it was started.

The low ground changes back and forth, the governor swings back and forth regularly, and the noise of the machine fluctuates regularly, giving out rhythm.

"Boo hoo-"sound, at this time you turn down the choke valve, the phenomenon disappears, but the speed can not reach the rated value, and the machine power is not.

Feet, unable to supply power; Second, the oil path in front of the main metering hole is blocked, resulting in insufficient oil supply. In addition to the above phenomenon, lower the resistance.

When the air door is closed, the regular fluctuation phenomenon will disappear for a short time, but it will appear again soon, and the amplitude of governor swing will become larger and larger.

Big, until downtime, sometimes accompanied by shooting phenomenon before downtime. Wait a while after stopping the machine, and then the machine can be started again.

Obstacles recur. This kind of fault is mostly due to the particulate impurities in gasoline blocking the oil circuit, or the valve and metering hole caused by the colloid of gasoline.

The blockage was found after cleaning.

It should be noted that the above phenomenon will be different due to the different rated power of the machine. The greater the power, the more fuel consumption.

After the oil circuit is blocked, it may suddenly stop without speed fluctuation.

Second, the ignition is too weak.

When the spark plug is weak in ignition, the engine shows the phenomena of weak work, unstable speed, intensified vibration and in-cylinder recoil.

Sound, accompanied by tempering or shooting. The above phenomenon is aggravated with the aggravation of the fault degree. Common causes of poor ignition

There are three main reasons: First, there is too much carbon deposit. When the working environment of the machine is too dirty, the working time is too long, the machine is frequently started or the cylinder does not burn.

When the quality of good engine oil and fuel oil is poor, it is easy to form carbon deposits between spark plug electrodes, resulting in weak ignition. When you find carbon deposit, you set the fire.

Cleaning the flower insert; Second, the electrode gap is too small. This fault can be determined by visual inspection or thickness gauge measurement. Generally speaking,

Is caused by improper use or repair, as long as the gap can be adjusted according to the specified value of the unit; The third is spark plug insulation.

Leakage of porcelain core or high voltage line. When the insulating porcelain core and high-voltage line are damaged or used for a long time, it is easy to produce leakage and sparks.

Whether the plug and high-voltage line leak electricity can be detected by fire test, and it can be replaced if the leakage is determined. In addition to the above three common

Cause, magnetron internal component failure will also lead to weak ignition or even no ignition, which can also be determined by the method of ignition test, when

When the magnetron fails, only the whole magnetron can be replaced.

Third, poor air intake.

The fault phenomenon of poor air intake of engine is obvious. After the machine starts, the sound is dull, the exhaust gas emits black smoke, and the speed cannot be reached.

When the rated value is reached, the unit cannot supply power. This kind of fault is mostly caused by the partial blockage of the air inlet. In practical work, the most tolerant.

The easily blocked part is the air filter. It's easy when the machine is used for a long time or often works in an excessively dirty environment.

The air filter is blocked by dust, which makes the air intake of the engine not smooth, and a large amount of dust enters the cylinder, which will speed up the cylinder.

The speed of carbon deposition leads to poor ignition and insufficient power of the engine, which increases the fuel consumption of the engine and accelerates the wear speed of the cylinder.

Degree. Therefore, the air filter should be checked regularly. If there is too much dust in the filter element, it should be used appropriately according to the material of the filter element.

The method of clearing. For paper filter elements, blowing compressed air from the inside of the filter element can be considered to clean the dust. But compression

The air pressure should not be too high to prevent the filter paper from being damaged, and water or oil should not be used to prevent oil and water from infiltrating into the filter element; about

Sponge filter element, first clean the dust with gasoline, then soak the sponge with clean engine oil, and squeeze out the excess engine oil by hand.

Use.

Fourth, the valve leaks.

Air leakage from the valve will lead to the decrease of cylinder compression force and insufficient combustion of gasoline. When the valve leaks seriously, the machine is not easy to start.

After starting, the engine speed is unstable, and the hiss of "Snoop, Snoop" will be heard when working, and at the same time, the exhaust gas will emit black smoke or the carburetor will flow back.

Fire and gas flee. The common causes of valve air leakage are: one is improper adjustment of valve clearance, and the other is serious valve burning.

Corrosion, third, carbon deposit on the valve head or valve stem. If the valve leaks, first visually check whether the valve clearance meets the requirements. If so,

Do not meet the requirements, should be adjusted; If the fault still exists, check whether there is carbon deposit on the valve head or valve stem and the valve.

Whether it is ablated. If the valve has carbon deposit, it should be cleaned; If the valve is ablated, remove the valve spring, intake valve and exhaust valve, etc. , first of all

Clean these parts with gasoline, and then use 120 coarse sandpaper for coarse grinding, and then use 280 fine sandpaper for fine grinding, or use

Grind with abrasive until the valve and valve seat are completely attached; If the valve is seriously ablated, the hole should be reamed first.

Five, the cylinder air leakage

In addition to valve leakage, other common causes of cylinder leakage are: first, cylinder gasket leakage; Second, the cylinder liner and piston ring are worn.

Excessive, piston ring elasticity is insufficient, and third, the piston ring is stuck in the piston ring groove due to carbon deposition. Failure phenomena caused by different reasons also

It's different. If the cylinder gasket leaks air, the machine will not feel compressed when rotating, so it is difficult to start, and there will be a hiss of air leakage at the cylinder gasket. After starting, the air leakage is aggravated, and blue smoke and black oil droplets are ejected from the fault point, so the speed of the machine is unstable, the power is insufficient, and there is a phenomenon of ignition, especially before stopping. If the air leakage is caused by the piston and piston ring, there is no compression feeling when the machine rotates, and the sound of air leakage in the cylinder will be heard. After start-up, sometimes there is a metal crash in the cylinder, the exhaust pipe emits blue smoke, and sometimes there is a lighter phenomenon. After working for a period of time, check the oil, and it will be found that the oil becomes thinner and the oil level rises. The above three causes are easy to identify. If the cylinder gasket leaks, re-tighten the cylinder head bolts according to the specified torque and sequence, and check whether the cylinder gasket is damaged or replaced; If the cylinder liner and piston ring are excessively worn and the elasticity of the piston ring is insufficient,

Then replace or enlarge the piston ring according to the repair process, or replace the standard cylinder liner and piston ring.

The above five situations will lead to the shooting flameout, give it a little flameout! To observe and analyze which one it is, here is a cheat sheet for you to take a closer look at in the next study! You can solve your problem! It is better to ask for help than to ask for help, and it is better to teach people to fish than to teach them to fish! I hope it helps you!