What engine does the BMW M4 use?

Why is there abnormal noise when stepping on the accelerator with the air conditioning on?

1. The abnormal noise is related to engine speed: Most common abnormal noises in the engine depend on the engine speed state. The noise exists during idle or low-speed operation. Possible causes include: excessive clearance between the piston and cylinder wall; overly tight piston pin or connecting rod bearing assembly; excessive clearance between the tappet and its guide hole; wear on the camshaft profile. 2. The abnormal noise is related to load: Many abnormal noises in the engine are clearly related to its load. When a cylinder is cut off, the noise disappears or reduces. Possible causes include: piston knocking; loose connecting rod bearing; piston ring leakage; broken piston pin. 3. The abnormal noise is related to temperature: Noise occurs at low temperatures and decreases or even disappears as the temperature rises. Possible causes include: excessive clearance between the piston and cylinder wall; piston issues due to incorrect depth and width of the main bearing oil groove.

8

5

Share

Why doesn't the Nissan Sunny move when stepping on the accelerator?

In fact, there are many reasons why a Nissan Sunny doesn't move when stepping on the accelerator, and it cannot be directly determined. Multiple factors can lead to the above malfunction, such as low fuel pressure or air in the fuel line, poor air flow meter signal in the circuit, poor throttle position sensor signal, damaged ignition coil, delayed ignition timing, or spark plug gaps that are too large or too small, all of which can cause the car to not accelerate when stepping on the accelerator. Additionally, a clogged three-way catalytic converter could also cause this situation. Moreover, if the RPM rises normally and the engine sound is loud, it might be in an idle state without being in gear, requiring a transmission check. If the RPM doesn't rise at all when stepping on the accelerator, a comprehensive engine inspection is needed. If this occurs, it is advisable not to take action on your own and to go to a 4S shop for relevant checks as soon as possible. However, since we're on this topic, we can list a few fault cases: If the car doesn't move when stepping on the accelerator, it is recommended to check the spark plugs, high-voltage lines, and ignition coils at a service station, check the fuel pump pressure, see if the fuel injectors are clogged, and also check if there is any misfiring in the ignition system. Secondly, this might also be a common issue with automatic transmissions. If it's a manual-automatic transmission, try switching to manual mode and pulling back 1-2 gears; if it's a pure automatic, try releasing the accelerator slightly and then pressing it down firmly again. Furthermore, this could also be a fuel quality issue. If you've recently refueled and this problem didn't exist before refueling, then there's a 70% chance that the fuel from the gas station is problematic, possibly mixed with water or other liquids. If water enters the engine through the intake, it could cause the air pipe to bend or the piston to be damaged, leading to insufficient cylinder pressure and thus the car not accelerating when stepping on the accelerator. Another possibility is long-term lack of maintenance, causing various systems to age and resulting in the car not accelerating when stepping on the accelerator.

16

4

Share

Can my original license plate be transferred to a used car?

Yes, but only if the original license plate has been used on the original vehicle for at least one year. If the plate was used for less than one year before the vehicle transfer, the original license plate will be invalidated. The plate can only be retained if it has been used on the original vehicle for more than one year, with a retention period of one year. Additional information: For the transfer, you need to present the identity proof of the vehicle owner, proof of ownership transfer, the vehicle registration certificate, the vehicle license, and other required documents. Below is relevant information about vehicle transfer: 1. Required materials: For vehicle transfer, both parties need to provide copies of their ID cards, the registration certificate, and the vehicle license. Then, pay the transaction tax at the used car exchange and complete the transfer procedures at the vehicle management office of the traffic police department. 2. Related documents: The documents required for vehicle transfer include the seller's ID card, the vehicle license, the vehicle registration certificate, the vehicle invoice, the license plate, the VIN, the insurance policy, and proof of tax payment.

4

5

Share

Which Terminal to Disconnect When Cutting Off Car Battery Power?

It is necessary to disconnect the negative terminal, not the positive one, and of course, there is no need to disconnect both terminals. Below is relevant information about the battery: 1. Battery: The battery, also known as a storage battery, is a device that converts chemical energy into electrical energy. The battery referred to here is a lead-acid battery, which is mainly made of lead and its oxides, with sulfuric acid solution as the electrolyte. The normal service life of a car battery varies from 1 to 8 years, largely depending on the vehicle's usage. 2. Battery Replacement: If the battery is dead, it is recommended to first measure the battery voltage. If using a multimeter for inspection, measure the battery voltage when starting the engine. You can first use a high-frequency discharge machine or a battery tester to measure. Under a load current of no less than 110 amps, the minimum voltage should not be lower than 9.6 volts and should remain stable for 5 seconds. If the voltage is below 9.6 volts but can remain stable for 5 seconds, it indicates over-discharge, and the battery should be recharged promptly. If the voltage is below 9.6 volts and cannot remain stable for 5 seconds, dropping rapidly to 0 volts or close to 0 volts, it suggests a possible battery fault that may require replacement.

10

2

Share

How many years does it take to obtain an A1A2D driver's license at the fastest?

To obtain an "A1A2D" driver's license, the age range is between 26 and 50 years old. The fastest time to obtain this license is 9 years. 1. Process: At the age of 18, you must first obtain a D license, upgrade to a B2 license at 21, upgrade to an A2 license after turning 24, and upgrade to an A1 license after turning 26. From 18 to 26 is 8 years, and accounting for overlapping exam times, it will take at least 9 years. 2. A1A2D License: Start by taking the A1 (which allows driving large buses, A3, B1, B2) license test. Then upgrade to the A2 (which allows driving tractor-trailers) license test. After passing, the permitted vehicle types on the license will change to "A1A2". If you then upgrade to the three-wheeled motor vehicle B license, after passing the test, the permitted vehicle types on the license will be marked as "A1A2D".

10

5

Share

Why does the car feel sluggish when stepping on the accelerator with AC on during a cold start in summer?

In summer, the car feels sluggish when stepping on the accelerator with AC on during a cold start, which may be due to poor valve sealing or excessive carbon buildup in the intake tract. Reasons for sluggish acceleration with AC on during a cold start: It could be caused by poor valve sealing and insufficient cylinder pressure; it might also result from excessive carbon buildup in the intake tract; another possibility is carbon buildup on the spark plugs or incorrect spark plug gaps; it could also be due to clogged fuel injectors, leading to insufficient fuel delivery. A detailed inspection is required to determine the exact cause. It is recommended to visit a 4S shop or auto repair shop for a comprehensive check. Causes of this common phenomenon: It is usually the result of multiple factors working together. First, unavoidable environmental factors come into play. In winter, temperatures are generally low, and the engine remains cold for a long time after starting. The engine oil inside the car becomes overly viscous, forcing the engine to operate under extreme conditions. This affects the engine's responsiveness. Compared to normal temperatures, acceleration in winter is relatively slower, sometimes taking a long time to respond. Additionally, in winter, the car's heating system starts working immediately upon startup. The water temperature in the radiator is insufficient to provide cabin warmth, so the heating system relies on the AC. Heating itself is highly energy-consuming, so the AC heating system also consumes a portion of the engine's output power. As a result, acceleration feels noticeably slower than usual.

8

2

Share

What engine does the BMW M4 use?

Why is there abnormal noise when stepping on the accelerator with the air conditioning on?

Why doesn't the Nissan Sunny move when stepping on the accelerator?

Can my original license plate be transferred to a used car?

Which Terminal to Disconnect When Cutting Off Car Battery Power?

How many years does it take to obtain an A1A2D driver's license at the fastest?

Why does the car feel sluggish when stepping on the accelerator with AC on during a cold start in summer?

Which is more comfortable, SUV or sedan?

Do both parties need to be present for a used car transfer?

What is the displacement of 35tfsi?

What type of helmet should be worn when riding a scooter?