Under what circumstances will the mixture in the car be too thin and under what circumstances will it be too thick?

Automobile mixture is a mixture of fuel and air, usually referring to a mixture of gasoline, diesel and air. However, due to the improvement of automobile technology and the diversification of fuel, there are also mixtures of natural gas, methane, coal gas, ethanol, methanol and other combustible gases. So, what is the reason for the high proportion of cars?

1, the fault phenomenon that the automobile mixture is too thick:

A. Oil seeps from the throttle shaft or carburetor gasket, which makes it difficult to start the engine.

B engine power decreases, temperature increases and fuel consumption increases.

C. When the spark plug is removed, wet gasoline and a large amount of carbon deposit can be seen on the electrode surface.

D the engine idling is unstable, and the muffler makes a rhythmic sound of "poof, poof".

2. Failure cause of automobile mixed gas: the choke valve is not opened, or the air filter element is dirty and blocked; Improper adjustment or lax sealing of the triangular needle valve leads to high oil level in the float chamber; Float rupture; Air metering hole is blocked or economizer fails; The quantitative needle of the main metering hole of carburetor is turned out too much or the main metering hole is worn too much.

3. Fault diagnosis and elimination of automobile mixture:

A. check whether the oil level in the float chamber is too high.

B. If the oil level is normal, check whether the choke valve is open and whether the air filter is dirty and blocked.

C. if the oil level is too high, adjust the oil level. If the oil level cannot be adjusted to the normal height, check whether the angle needle valve is sealed and whether the float is broken.

D. When all the above inspections are normal and the mixture is still too rich, check whether the main metering hole of carburetor passes.

Whether the large economizer is not working properly and whether the air hole is blocked.

E. For carburetor with metering needle of main metering hole, check whether the metering needle is screwed out.