What are the symptoms of oil leakage in automobile tubing?

The symptoms of oil leakage in automobile tubing are as follows: 1. If it is serious, it will affect the start, because it is compression ignition, and it will if the air-fuel ratio is not well controlled during fuel injection. But generally speaking, it can be started, but black smoke is emitted;

2. When the gasoline pump is working, if the oil return pipe is blocked, the oil pressure in the oil pipe between the gasoline pump and the carburetor will increase accordingly. Therefore, in order to balance the pressure of the intake needle valve of carburetor and keep the float stable, the oil return pipe must be unobstructed;

3. If the oil return pipe is blocked, especially when the engine load increases too fast or the throttle fluctuates, too high gasoline pressure will cause the needle valve seal to be relatively lax. If the needle valve is not tightly sealed, the oil in the float chamber will increase and gasoline will flow into the cylinder from the carburetor;

4. When the car is driving at high speed, even if there is unburned gasoline in the combustion chamber, the driver feels that the engine is running normally due to the high cylinder pressure of the engine and the high pressure and strong fire supplied by the automobile ignition system (the electrode will not be ablated in a short time);

5. Therefore, in the inspection and maintenance of such faults, maintenance personnel often ignore the influence of the oil return pipe condition on the engine.

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