The engine of the Mazda6 shakes, but idling to 1000 rpm is normal

Causes of unstable car idling;

Throttle oil and throttle carbon deposits, dirty intakes, blocked intakes can cause idle pulling, throttle carbon deposits or oil are the most common causes of unstable idling.

Spark Plug Failure: Weak sparks caused by individual spark plug failures can also cause carbon deposits, which can be cleaned to restore spark plug activity, but some spark plugs have a fast lifespan and can reduce performance.

Blocked oil circuits: There are also oil circuit blockages and intake pipe failures represented by fuel injectors. When the oil circuit represented by the injector is blocked, the fuel supply pressure is insufficient, the fuel atomization is poor, the mixing ratio is unbalanced, and the combustion is incomplete, which leads to related failures.

Specific solutions to idle jitter:

1. The engine has serious carbon deposits. The most common cause of idle judder is excessive carbon build-up on the throttle or injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the fuel injector during cold start will be absorbed by the carbon deposit, resulting in a mixture that is too thin and making it difficult to start.

After landing, the gasoline adsorbed on the carbon deposits will be sucked into the cylinder by the engine and burned, which will thicken the mixture. The mixture is sometimes dilute and sometimes thick, which will cause idle jitter after cold start. The lower the temperature, the greater the amount of oil required for cold starts, and the more the presence of carbon deposits affects cold starts.

The solution is to clean the carbon deposits at the throttle and injector.

2. Poor ignition system and poor ignition of spark plugs will also lead to engine idling and shaking. If there is a problem, check if the ignition system is faulty and if there is too much carbon deposited in the spark plug.

3. The oil pressure is unstable. If you have cleaned the engine carbon deposits, cleaned the throttle valve or replaced the spark plug, and there is still the problem of body shaking when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. If the oil pump supply pressure is not normal or the intake pressure sensor is incorrect, it can also cause the body to shake when idling.

Solution; The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car factory is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We can only gradually alleviate most of the problems by maintaining clean oil circuits. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

You think it's shaking, not shaking

Analysis of the causes of car shake:

1. Suspension system problems.

Body shake is also related to the aging of the suspension system. It is mainly responsible for filtering out the shake of the engine when it is running, and if there is a problem with the suspension, these vibrations will be transmitted directly to the steering wheel and cab, affecting the driving. When the engine is idling, it is easy to cause shaking when the electrical system in the car is turned on.

The engine will increase the load when the electrical appliances are turned on, causing the idle speed to drop, and to compensate for the jitter caused by the idle slip, the engine will automatically increase the speed by partially. So, when the electrical system, especially the air conditioner, is turned on, the engine will often shake. This jitter is likely to be caused by the aging of the shock absorber and needs to be replaced in time.

2. Tire problems.

For tires, the tire must be balanced once when the car is replaced with new tires and new steel rims, otherwise the steering wheel will be prone to shake when the counterweight is uneven. If you find that the tire weight is not equal, you need to add lead to the inside of the rim to average the weight of the tires on both sides. Whether it is a general steel ring or a lightweight aluminum ring, it may deform or crack when subjected to a certain external force.

Deformation of the rim can cause shaking when driving, uneven weight of the rim can also cause shaking when driving, and incorrect angle of the rim can also cause shaking when driving.

3. Throttle problems.

The most common cause of car shake may be a dirty throttle valve and excessive carbon build-up in the fuel injector. After the car travels for a period of kilometers, the throttle valve will be too dirty to cause the throttle to close loosely or the idle motor to stagnate, resulting in the engine idling speed is too high, and the carbon deposits generated by the engine in this process will also cause the vehicle to shake, especially when starting the vehicle, the engine will shake more than normal, and even sometimes there will be a phenomenon that can not be started at one time. Therefore, when the body shakes, the first thing to do is to check the throttle and fuel injectors.

If you find that the throttle valve is too dirty or the fuel injector has too much carbon deposit, you should clean it with fuel injector cleaner or throttle cleaner in time.

4. The oil pressure is unstable.

If you still find that the body shakes after these are finished, it is recommended that you go to the repair shop to check whether the fuel supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is not normal, the intake pressure sensor is wrong and improper work will cause the body to shake.

Mazda6 acceleration jitter first check whether the left and right half shafts are bent, and then disassemble and check whether the inner walls of the left and right inner ball cages are worn and pitted, which is mostly caused by damage to the inner ball cage.

Modification of the exterior of the body has always played a very important role, and the quickest and easiest way to change the appearance of the body is to add an aerodynamic kit. The so-called aerodynamic kit is commonly known as the big bag, which basically includes the grille, side spoiler (side skirt), rear surround and rear spoiler flow (rear wing), etc., sometimes we will also see a lower spoiler installed on the original bumper, which is generally called the chin: if the front and rear safety rods are not replaced, just the chin, some people call it a small bag.

In addition to making the vehicle more visible and sporty, the most important thing is to improve the performance of the vehicle. Adding an aerodynamic package doesn't make the car go faster, strictly speaking, a good package usually slows down the car and makes the car more consistent.

The Mazda6's tough triple H-shaped body structure, front and rear suspension, and extremely stiff axles form an organic whole, which work together to maximize the kinetic energy of a crash and thus provide good protection for the occupants. In this 3H structure, the roof cover is connected to the A-pillar and the C-pillar with a beam, and the crossbeam is fixed at the upper end of the B-pillar; The body is equipped with a thick B-pillar to connect the extremely strong roof to the floor; The floor is connected by cross beams to connect the front and rear suspensions. This three-in-one shape greatly improves the car's ability to absorb the energy of a crash.

Photo by Lu Liting) @2019

The possible causes of the idle shake of the Mazda6 engine are as follows: 1. Leakage of the intake manifold or various valves: When the air, gasoline vapor and combustion exhaust gas that should not enter enter the intake manifold, the mixture is too thick or too thin, and the engine burns abnormally.

When the leakage position only affects individual cylinders, the engine will shake more violently, which will have a greater impact on the idle speed of the cold car. Common causes are: loose intake header clamp or hose rupture; Air leakage from the intake manifold gasket; Damage to the intake manifold or other parts to grind out of the intake manifold; Injector O-ring leakage; The plug of the vacuum tube falls off and cracks; The crankcase forced ventilation (PCV) valve has a large opening; The activated carbon tank valve is normally open; Exhaust gas recirculation (EGR) valve is not closed tightly, etc.

2. Injector failure: The injector has uneven fuel injection and poor fog, resulting in an imbalance in the power emitted by each cylinder. Common causes are:

Fuel injector clogging, poor sealing, injecting fuel in a linear pattern, etc. 3. Spark plug and high-voltage line: The failure of spark plug and high-voltage line leads to a decrease in spark energy or fire.

Common causes are: incorrect spark plug clearance; Ablation or damage to the spark plug electrode; The spark plug electrode has carbon deposits; Cracks in the spark plug magnetic insulator; The resistance of the high-voltage line is too large; Leakage of high-voltage wire insulation sheath or plug; Poor electrode ablation or poor insulation of the fire splitter.

Normal. 1. Generally, the normal idle speed of the car will not exceed 1000 rpm, and it is basically around 600-900 rpm. But in the cold start, the idle speed will be relatively high, because the engine will cause wear and tear when working at low temperatures, in order to avoid this situation, the engine computer will control the system to increase the speed at idle, and quickly reach the normal working temperature of the engine.

When the water temperature stabilizes, the idle speed drops back to the normal value.

2. The idle speed is set at the factory, and there will not be much difference in daily use. If the idle speed of the car is too high or too low after the car is hot, the car may have a fault, such as a leak in the intake pipe, a damaged fuel injector, etc., and you need to go to a repair shop to check it. If the idle speed fluctuates and the vehicle shakes severely, it is likely to be caused by excessive carbon deposition in the car.

What causes Mazda6 idle jitter? The causes of idle shake are serious engine carbon deposits, ignition system problems, unstable oil pressure, aging engine parts, etc., if the idle shake, then it is recommended that the owner first clean the engine of the vehicle, replace the spark plug, check the fuel supply pressure, etc. The reasons for the Mazda6 idle jitter are as follows:

1. The engine has serious carbon deposits. The most common cause of car shake is a dirty throttle or excessive carbon build-up in the fuel injector. When there is too much carbon deposit inside the engine, the gasoline sprayed by the cold start injector will be absorbed by the carbon deposit, resulting in the cold start mixture being too thin, making it difficult to start.

2. Ignition system problems. Check the working condition of the spark plug, high-voltage wire and ignition coil, the ignition system is not working well, and the spark plug is not in good condition and the spark plug is not in good condition. The solution is to check the spark plug for excessive carbon accumulation and replace the spark plug.

3. The oil pressure is unstable. If you have cleaned the engine carbon deposit, washed the throttle, changed the oil pad and spark plug, etc., and still found that the body shakes when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and intake pressure sensor are normal. @2019

The causes of the Mazda6's idle jitter are dirty air filters, broken high-voltage lines, and excessive carbon deposits. The specific reasons are as follows: The empty air filter is too dirty:

The air filter is to protect the engine and reduce wear, and is generally replaced once every 10,000 kilometers. If the replacement is not timely, the engine will shake due to low idle speed due to insufficient air intake, which can be solved by replacing the filter element. High Voltage Line Open Circuit:

High-voltage line break refers to the breakage of the conductor core of the high-voltage line, which may affect ignition and cause engine vibration. You can use a multimeter to measure the resistance, and change it to a resistance that is obviously several times larger. Excessive carbon deposits:

The throttle, idle valve, and air intake will be clogged by carbon deposits and grease after a period of use, and poor air intake will affect the stable idle speed and cause shaking. The above parts can be solved by checking and cleaning with cleaning agent, and there is no need to remove and clean.