The Liberty Ship cool car starts suddenly, and it is difficult to start again after a few hours, is

First, the phenomenon of the problem.

Generally, spark plug problems will lead to poor engine work, such as difficult starting, unstable idling, poor acceleration, urgent refueling and tempering, excessive exhaust gas, and increased fuel consumption. If the carbon deposition in the engine is serious, the valve will not be tightly closed, so that a cylinder will not work completely because there is no cylinder pressure, and even stick the valve to prevent it from returning. At this point, the valve and piston will interfere with the movement, which will eventually damage the engine.

It can be seen that the impact of carbon deposits on the engine is very large.

Second, the solution.

1.When unplugging the high-voltage wire joint, it should be gentle, and the spark plug insulator should not be shaken vigorously during operation, otherwise the spark plug sealing performance will be damaged.

2.The engine can be disassembled only after cooling, when the spark plug to be removed is loosened, blow the dirt around the spark plug one by one with a thin hose, and the dirt falls into the combustion chamber after the spark plug is unscrewed out.

3.The screw area, spark plug electrode and gasket must be kept clean, dry and free of oil stains, otherwise it will cause leakage, air leakage, spark weakening and other failures.

4.When installing, first use the sleeve to align the spark plug with the screw hole, gently screw it in by hand, screw it to about 1 2 of the full length of the thread, and then tighten it with an afterburner lever. If the hand feeling is not smooth when twisting, you should exit to check whether there are any entrained impurities in the screw mouth or thread, and you must not blindly tighten it, so as not to damage the screw hole and affect the cylinder head, especially the aluminum alloy cylinder head.

5.It should be tightened according to the required torque, too loose will cause air leakage, too tight will make the gasket lose elasticity, and it will also cause air leakage. Since the tapered spark plug does not use a gasket, it is particularly important to comply with the tightening torque.

6.When the carbon deposit and oil accumulation on the spark plug are not very serious, you can soak it in gasoline or kerosene and acetone solvent, and after the carbon deposit is softened, brush the carbon deposit on the electrode and the porcelain core and the cavity of the shell with a non-metallic brush, and dry it with compressed air. After cleaning, the spark plug is checked for clearance.

3. Preventive methods.

After completing the above, the installation test will be carried out, and the owner will be reminded to do regular maintenance to keep the oil and gas circuits clean; It is recommended to clean the air grid every 4000-8000km (according to the use of the vehicle and the actual situation) (replace it according to the actual situation), clean the throttle once, and clean the fire nozzle; Every 15,000-25,000km (according to the use of the vehicle and the actual situation), clean the intake pipe, throttle combustion chamber and related oil circuits, check the gasoline grid and replace it according to the situation; Avoid idling and stopping for a long time, avoid turning off the engine immediately after high-speed driving, avoid high-speed driving immediately after starting, and avoid low-speed gear shifting.

Hello, how many kilometers the car is, the spark plug will also cause difficulty in starting.

Spark plugs and gasoline, it should be that gasoline is not good.

It is because the oil and gas mixture of the engine of the cool car is uneven and the combustion is not sufficient, so there is shaking, and the engine temperature rises well, no problem.

Hello, it is recommended to clean the throttle and fuel injector, and the landlord can make a reference.

Generally due to the serious carbon deposition of the valve or intake pipe, the gelatinous content of domestic gasoline itself is very high, and burning together with gasoline will cause a lot of carbon deposits in the fuel supply system in the fuel supply system, such as the injector, the combustion chamber of the engine, the piston ring groove, the spark plug, the back of the intake valve, and the intake tract. The continuous evaporation and oxidation of some unburned fuels also produces a large amount of carbon deposits. The gasoline sprayed by the cold start fuel injector will be absorbed by a large amount of carbon deposits, resulting in the mixture of cold start being too thin, making it difficult to start until the gasoline absorbed by carbon deposits is saturated, and the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the vacuum suction of the engine after landing, and the mixture becomes thick, and the combustible mixture of the engine is dilute and thick, resulting in idle shaking after cold start.

Since the lower the temperature, the greater the amount of oil required for the cold start, the more carbon deposits will affect the success of the cold start. Mosheng Carbon Depot Cleaner can thoroughly clean the combustion chamber, spark plugs, fuel injectors, piston tops and cylinder-piston components of gasoline and diesel engines (including turbocharged engines) with carbon, coke, gum and other dirt. Reduced oil consumption; increased engine power; Equalization cylinder pressure; Reduce engine operating noise; Eliminate the hidden danger of piston overheating caused by the deterioration of thermal conductivity; Reduced engine CO emissions.

If the intake valve is not closed tightly, your car is an idle motor (the idle motor cannot be adjusted, controlled by the computer board) or can manually adjust the idle speed, if it can be adjusted manually, adjust the idle speed a little higher!

Hello, such a problem should first rule out the conventional spark plug problem, and then check the oil pressure, the oil pressure is normal to check the fuel injector, the drip probability of the fuel injector should be very large, it is recommended to eliminate it from simple to complex first, I hope it can help you,

Does the car have a fault code, and how long does it take for a hot car to ignite after it turns off.

This is most likely due to the spark plug, the ignition of the spark plug is not smooth, resulting in the engine not working properly, and sometimes the fault light of the engine will be on. Replace the spark plug a little better, don't rush to walk after starting in the morning, let the engine idle for a while, and see that the instructions are basically normal before walking. Another problem that does not solve the problem if replacing the spark plug is the problem of your ignition coil or cylinder wire, but this problem usually does not occur.

It could be carbon deposits, it could be oil.

I also think it's a matter of carbon deposits.

Geely Liberty Ship cold car start difficult, personally think that it may be caused by too much carbon in the car engine, it is recommended to check whether the car's engine needs to remove carbon deposits.

Check the inlet air temperature sensor and water temperature sensor.

There are relationalities.

The idle speed of the car startingSimply put, idle speed is starting.

The machine "does not work hard".

Yes, but it's not very likely.

Generally, it is difficult to start if the car is cold.

The hot car is normal. There are many problems.

Valve above. Disassemble the cylinder head with air leakage.

Adjust or replace the valves.

If this is not a problem, you can try to change it to a DC igniter.

Still won't work. You can clean the carburetor or replace the carburetor.

Yes but not much and injectors.

The throttle is self-learning, and the next time you wash the throttle, you should use a special computer to learn, which is generally available in 4S stores. Another way is to open and close the key door, back and forth 2 to 3 times, about 10 seconds each time!

There are many factors that cause the car to be difficult to start, such as carbon deposits, and too much carbon in the throttle volume. Failure of the spark plug and ignition coil, poor ignition coil working at high temperatures. The injector is stuck and leaking, resulting in over-concentration of the mixture, which makes it difficult for the hot car to start.

Poor working water temperature sensors, crankshaft position sensors, and gasoline pumps can make it difficult for hot cars to start, and such fault phenomena need to be thoroughly checked.

Hello How long can this abrupt sound last [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】