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How to Determine When Fuel Injectors Need Cleaning?

1 Answers
MorganFitz
07/29/25 11:19am
When fuel injectors become dirty, the car will exhibit the following noticeable symptoms: 1. Increased engine noise, especially noticeable at lower gears and below 2500 RPM. 2. Unresponsive throttle, resulting in less smooth driving. There is a noticeable lag after pressing the accelerator, and the engine RPM rises slowly when revving in neutral. 3. Idle vibration, particularly noticeable when starting. There may be slight misfiring when shifting at low gears and low RPM. Here is some information about cleaning: 1. Cleaning interval: Clean every 40,000 to 60,000 kilometers. 2. Price: Cleaning at a 4S shop costs around 1000 RMB.
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How to Adjust the Headlight Height on the Mazda3 Axela?

The method for adjusting the headlight height on the Mazda3 Axela is as follows: 1. Choose a dim environment, park the car facing a wall, ensuring the front of the car is aligned with the wall and about 5 to 6 meters away; 2. Turn on the headlights, cover one headlight with an opaque thick cloth, and adjust each headlight individually; 3. Mark the wall where the center of the light beam and the car emblem position align, ensuring the marks for both headlights are equidistant from the center position; 4. Adjust the white screw on the headlights, with the right headlight shining completely horizontally and the left headlight adjusted about 10cm higher. Additional relevant information: The Mazda3 Axela is a compact 4-door, 5-seater sedan with body dimensions of 4662mm in length, 1797mm in width, 1445mm in height, and a wheelbase of 2726mm.
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When Should Tire Tread Be Replaced?

Tire replacement criteria: 1. External damage (severe tread damage or sidewall damage, etc.). 2. Severe tread wear (tires have tread wear limit indicators). 3. Rubber aging (fine and dense cracks appear on the tire). When replacing tires, pay attention to the following aspects: 1. For tires with low mileage, you can replace one at a time. For tires with higher mileage and significant wear, it is generally recommended to replace them in pairs. For four-wheel-drive vehicles, it is advisable to replace all four tires at once. 2. When replacing tires, ensure that all parameters of the new tires match those of the original tires as closely as possible—they can be higher but not lower. Pay special attention to the speed rating and load capacity parameters. Some tires may have the same outer diameter and aspect ratio but differ in pressure resistance and speed, resulting in significant price differences. 3. When replacing tires, perform wheel balancing. Try to align the yellow mark on the tire with the valve stem to minimize balancing errors.
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How to Remove the Car Sunroof Sunshade?

The method for removing the car sunroof sunshade is as follows: 1. Remove the sunshade by hand, starting with the right side hooked in place. Use a flathead screwdriver to gently pry the edge of the sunshade that is hooked, being careful to avoid breaking the plastic hook or the sunshade itself. 2. Once the right side is pried open, rotate the sunshade clockwise by about ninety degrees with your hand. At this point, you will see a small white cover on the left side of the sunshade. Use the flathead screwdriver to gently pry off this small cover. 3. Next, you will see a small screw inside. Use a T-20 torx screwdriver to remove this screw. 4. After the screw is removed, hold the left side of the sunshade with your left hand and the right side with your right hand, then gently pull downward, focusing on the left side. This will separate the sunshade from the car's headliner.
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How to use the ECO mode in the new Qashqai?

The ECO mode in the new Qashqai can be activated simply by pressing the ECO button. This mode is particularly suitable for high-speed cruising on highways. The vehicle offers three driving modes: Comfort Mode, ECO Mode, and Sport Mode. Each mode alters the engine's operation and the transmission's shift logic differently. In ECO Mode, the throttle response is slower, the transmission shifts up more aggressively, and the engine runs at lower RPMs. In Sport Mode, the engine operates at higher RPMs, the transmission delays shifting, and the throttle becomes more responsive. When in Sport Mode, the transmission only upshifts once the engine reaches the redline, allowing the engine to deliver its maximum horsepower. The new Qashqai measures 4401mm in length, 1837mm in width, and 1593mm in height, with a wheelbase of 2646mm. It is powered by a 2.0L naturally aspirated engine.
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What Causes the Engine Light to Come On and the Car to Shake?

Poor combustion of the air-fuel mixture and abnormal fuel supply pressure can cause the engine warning light to illuminate and the car to shake. Here are some related details about the engine light coming on and the car shaking: 1. Poor combustion of the air-fuel mixture in the engine. When the mixture in the cylinder is too rich, the vehicle may experience symptoms such as knocking and shaking. 2. When the air-fuel mixture is too lean, the vehicle may exhibit symptoms like poor acceleration. 3. Abnormal fuel supply pressure and faults in the intake pressure sensor can also cause these issues. If the fuel pump's supply pressure is abnormal or the intake pressure sensor provides incorrect readings or malfunctions, it can lead to car shaking and insufficient power. 4. Faults in the spark plugs, high-voltage wires, or ignition coils can also cause these symptoms. Poor performance of the ignition system or weak spark plug firing can result in the engine warning light coming on, car shaking, and insufficient power.
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What procedures are required to cancel a motor vehicle license plate?

You need to bring the motor vehicle registration certificate, motor vehicle driving license, the owner's ID card, and the original license plate of the vehicle to the local vehicle management office to complete the relevant license plate cancellation procedures. At the same time, you need to fill out an application for extension and a scrapping cancellation application form. The following are the relevant materials for canceling a motor vehicle license plate: 1. During the use of the vehicle license plate, it is not allowed to remove it privately or cover it. If the vehicle license plate is damaged, it must be replaced in time. 2. The vehicle license plate is for exclusive use of the vehicle and cannot be lent to other vehicles. If the vehicle license plate is lost, you must first report it to the local public security authority and then go to the vehicle management office to replace the vehicle license plate. 3. Vehicle license plates are divided into several types, a total of five. 4. Different vehicle license plates represent different vehicle uses. All vehicle license plates must comply with traffic rules when driving on the road. Special industries are allowed to not comply with traffic rules during special periods.
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