What is the reason why it is difficult to ignite a car?

The problem of car ignition difficulty occurs from time to time, but I don't know what the reason is and what the problem is. Now let's analyze the reasons in the station. Step 1: Observe whether the plug on the engine surface leaks oil or water, or whether the plug is improperly blocked, or whether the vacuum tube is broken. Step 2: Then you'd better use a special computer (decoder) to see if there is one.

What is the reason why it is difficult to ignite a car?

The problem of car ignition difficulty occurs from time to time, but I don't know what the reason is and what the problem is. Now let's analyze the reasons in the station.

Step 1: Observe whether the plug on the engine surface leaks oil or water, or whether the plug is improperly blocked, or whether the vacuum tube is broken.

Step 2: Then you'd better use a special computer (decoder) to see if there are any fault codes. If so, you can prescribe the right medicine. If not, step 3.

Step 3: Check whether there is high pressure and whether the high pressure is normal. You can pull out the high-voltage line one cylinder at a time for inspection.

Step 4: Focus. Compared with your fault, remove the spark plug to check whether the electric shock gap of the spark plug is too large or too small, or is it seriously ablated? If not, use the flashover test to see whether each spark plug has strong ignition and can be replaced if it has weak ignition.

Step 5: Check whether the oil pressure is normal, and check the fuel injector and oil pump. In addition, water temperature sensors should also be considered.

I don't know if it's a weak start or a difficult fire. If it is a weak start, it has something to do with the battery. If it has been replaced, it is not. Please check whether the connecting cable is secure and whether the battery clip is secure. If there is no problem, it will be the first round! If it is difficult to catch fire (for example, the machine won't catch fire), it's hard to say. Oil circuit, valve, valve body (carburetor), etc. This is very important, so we have to go to the maintenance department!

What should I do if the car is difficult to ignite? When the car ignition is difficult, you can try the following four methods:

Air intake system: Air intake system mainly refers to throttle and air intake.

Cleaning method of throttle valve: remove the fixing screw of intake valve, rinse with throttle cleaner, and wipe it with special soft cloth later.

Air intake cleaning method: remove the throttle valve, fix the cleaning agent of the non-detachable air intake system above the front cover, and pour in the cleaning agent. When the vehicle is idling, keep the speed at about1500rpm10-15min.

Fuel injection system: The fuel injection system includes fuel injectors and fuel tanks.

Cleaning method: remove the oil inlet pipe, connect the special tools of the fuel injection system, add cleaning additives that will not decompose the fuel, adjust the pressure, and keep the idle speed at 1200 for 20 minutes. Pay attention to fire prevention when cleaning the fuel injection system, because gasoline will flow out when the fuel inlet pipe is removed. Remember to pay attention to open flames.

Exhaust system: including exhaust branch pipe, exhaust pipe, muffler and exhaust purification device (three-way catalyst).

Cleaning method: Open the fuel tank cover, add ternary catalytic cleaning agent to the fuel tank, keep the rotation speed between 2000-3000 rpm, and run at idle speed for more than 20 minutes.

Combustion system: The combustion system refers to the combustion chamber, which is located at the top of the engine steel cylinder cover and above the piston.

Cleaning method: put down the combustion chamber, add professional cleaning agent, and then drive on the road at a speed of 80- 100 km for a period of time.

In addition, if it is mainly operated in urban areas, it is best to maintain the four major systems every 20,000 kilometers.

Therefore, it is necessary to maintain the car regularly. When the car ignition is difficult, you should know how to check and solve the problem to prevent some minor troubles.

What is the reason why the car is difficult to ignite?

Step 1: Observe whether the plug on the engine surface leaks oil or water, or whether the plug is improperly blocked, or whether the vacuum tube is broken. ?

Step 2: Then you'd better use a special computer (decoder) to see if there are any fault codes. If so, you can prescribe the right medicine. If not, step 3.

Step 3: Check whether there is a high-voltage power supply and whether the high-voltage power supply is normal. You can pull out the high-voltage line one cylinder at a time for inspection.

Step 4: Focus. Compared with your fault, remove the spark plug to check whether the electric shock gap of the spark plug is too large or too small, or is it seriously ablated? If not, use the flashover test to see whether each spark plug has strong ignition and can be replaced if it has weak ignition.

Step 5: Check whether the oil pressure is normal, and check the fuel injector and oil pump. In addition, water temperature sensors should also be considered.

I don't know if it's a weak start or a difficult fire. If it is a weak start, it has something to do with the battery. If it has been replaced, it is not. Please check whether the connecting cable is secure and whether the battery clip is secure. If there is no problem, it will be the first round! If it is difficult to catch fire (for example, the machine won't catch fire), it's hard to say. Oil circuit, valve, valve body (carburetor), etc. This is very important, so we have to go to the maintenance department!

What should I do if the car is difficult to ignite? When the car ignition is difficult, you can try the following four methods:

Air intake system: Air intake system mainly refers to throttle and air intake.

Cleaning method of throttle valve: remove the fixing screw of intake valve, rinse with throttle cleaner, and wipe it with special soft cloth later.

Air intake cleaning method: remove the throttle valve, fix the cleaning agent of the non-detachable air intake system above the front cover, and pour in the cleaning agent. When the vehicle is idling, keep the speed at about1500rpm10-15min.

Fuel injection system: The fuel injection system includes fuel injectors and fuel tanks.

Cleaning method: remove the oil inlet pipe, connect the special tools of the fuel injection system, add cleaning additives that will not decompose the fuel, adjust the pressure, and keep the idle speed at 1200 for 20 minutes. Pay attention to fire prevention when cleaning the fuel injection system, because gasoline will flow out when the fuel inlet pipe is removed. Remember to pay attention to open flames.

Exhaust system: including exhaust branch pipe, exhaust pipe, muffler and exhaust purification device (three-way catalyst).

Cleaning method: Open the fuel tank cover, add ternary catalytic cleaning agent to the fuel tank, keep the rotation speed between 2000-3000 rpm, and run at idle speed for more than 20 minutes.

Combustion system: the combustion system refers to the combustion chamber, which is located at the top of the engine steel cylinder cover and above the piston.

Cleaning method: put down the combustion chamber, add professional cleaning agent, and then drive on the road at a speed of 80- 100 km for a period of time.

In addition, if it is mainly operated in urban areas, it is best to maintain the four major systems every 20,000 kilometers.

1: 1, air intake system

The air intake system mainly refers to the throttle and air intake. The intake valve is located in front of the intake branch pipe and behind the air cleaner element. Different models, near and far positions.

Symptoms: If the air intake system is not clean, it is easy to cause the vehicle to waste oil, step on the accelerator and not move forward, or feel stuck. If you step on the car again, it will go forward.

Cleaning method of throttle valve: remove the fixing screw of intake valve; Rinse with throttle cleaner; After a while, clean it with a special soft cloth.

Air inlet cleaning method: remove the throttle valve; Fix the cleaning agent of the air intake system above the front cover without disassembly; Pour in detergent; When the vehicle is idling, the speed should be kept at around 100 rpm for 10- 15 minutes; The detergent will be discharged from the exhaust pipe after being burned by the engine. 2.2. Fuel injection system

The fuel injection system includes a fuel injector and a gasoline tank.

Symptoms: unclean fuel injection system can easily lead to high fuel consumption, idling jitter, excessive exhaust gas and strong smell.

Cleaning method: remove the oil inlet pipe; Special tool for connecting fuel injection system; Adde a clean additive which does not decompose clean fuel; Adjust the pressure; When idling, keep the speed at 1200 rpm for about 20 minutes.

Special reminder: If the fuel injection system is too dirty, it needs to be disassembled for ultrasonic cleaning, so that it can be cleaned more thoroughly. However, if the mileage exceeds 654.38+ 10,000 kilometers, it is recommended not to use ultrasonic cleaning, which may easily flush the injector.

Pay attention to fire prevention when cleaning the fuel injection system, because gasoline will flow out when the oil inlet pipe is removed, so avoid open flame.

3.3. Exhaust system

The exhaust system refers to the three-way catalysis of exhaust light behind the exhaust pipe.

Symptoms: the exhaust system takes a long time to maintain, the gasoline is not good, and the exhaust pipe is easily blocked, especially over 80,000 kilometers. The high speed can't be increased, and the exhaust gas exceeds the standard.

Cleaning method: open the fuel tank cover; Adding ternary catalytic cleaning agent into the oil tank; When idling, keep the speed between 2000 and 3000 rpm for more than 20 minutes.

4.4. Combustion system

The combustion system refers to the combustion chamber, which is located at the top of the engine steel cylinder cover and above the piston.

Symptoms: the combustion system is dirty, and the vehicle is prone to carbon deposition, knocking, jitter, poor power and excessive exhaust gas.

Cleaning method: put down the combustion chamber; Add professional detergent; Then run the third ring road at a speed of 80- 100 km.

Matters needing attention

Special reminder: If the vehicle has only traveled for 20,000 kilometers, it is recommended not to disassemble or clean it. If the mileage is 60,000-80,000 kilometers and the combustion chamber is dirty, remove it and clean it. Generally, disassembly and cleaning are not recommended.

The four systems should be maintained every 20,000 kilometers. After maintenance, the driver's driving experience will be obviously different, which will significantly improve the power and fuel economy of the car. Therefore, we must pay attention to the maintenance of automobile fuel and intake and exhaust system when using the car at ordinary times.

What are the causes of automobile ignition difficulties @20 19?