···
Log in / Register

How often should the spark plugs be replaced on a Mistra?

4 Answers
LouisRose
07/29/25 9:22am

The spark plugs on a Mistra should be replaced every 60,000 kilometers. Methods to determine if spark plugs are damaged: Remove the spark plugs and observe them. The condition of the spark plugs can be judged based on their appearance and color. Normal spark plugs have a skirt and electrodes that appear gray-white, gray-yellow, or light brown. A properly functioning spark plug has a skirt that is reddish-brown, with an electrode gap between 0.8-0.9mm and no signs of electrode burn. If the spark plugs are covered in oil or deposits but are not damaged, they can continue to be used after cleaning off the oil and deposits. If the spark plugs are severely damaged, with signs such as blistering at the top, black streaks, cracks, or melted electrodes, the cause of the damage should be identified. After troubleshooting, replace the spark plugs with new ones. Additionally, if the spark plugs appear black as if smoked, it indicates that the wrong heat range was selected or that the air-fuel mixture is too rich, or that engine oil is leaking into the combustion chamber.

Was this review help?
1
0
Share
AthenaLynn
08/12/25 9:37am

The frequency of changing spark plugs for the Mistra. After driving for ten years, I've found that generally replacing them every 60,000 kilometers is most appropriate. For experienced owners like me who frequently monitor their car's condition: if acceleration feels sluggish, fuel consumption suddenly increases, or the engine shakes severely during cold starts, it might be time to check the spark plugs. Iridium spark plugs last longer, possibly up to 80,000 kilometers, but ordinary copper-core ones need replacement sooner. Delaying replacement can affect ignition efficiency, cause engine carbon buildup, and even damage the catalytic converter, leading to more complicated and costly repairs. During regular maintenance, it's good to consult with the mechanic and adjust based on driving habits. Highway driving causes less wear, while city driving in traffic can lead to faster deterioration. Don't skimp on this expense—regular replacement ensures better fuel efficiency, smoother operation, and overall peace of mind.

Was this review help?
19
3
Share
Expand All
SanLane
10/06/25 5:21am

As a family car, I replace the spark plugs in my Mistra every 50,000 kilometers. This ensures no breakdowns on the road, affecting school runs or commutes. The 4S shop says delayed replacement leads to aged spark plugs, poor ignition, and increased fuel consumption—costing more in the long run. New ones aren't expensive; OEM parts plus labor cost just a few hundred. I also recommend checking the plug connections for looseness or carbon buildup as preventive maintenance. Remember to log the mileage as per the manual and set service reminders for convenience. Saves time and keeps you safe—don’t wait until the engine warning light comes on.

Was this review help?
5
2
Share
Expand All
StMaximus
11/19/25 6:48am

The replacement interval for the Mingtu spark plugs depends on the type: the original ones usually use iridium, which can last over 80,000 kilometers, while copper plugs may need replacement at around 30,000 kilometers. Weak sparking from the plugs can cause delayed ignition, affecting combustion efficiency. Regularly self-check or have a technician measure the electrode gap during maintenance. Simple maintenance can enhance performance.

Was this review help?
7
1
Share
Expand All
More Forum Discussions

How to Clean the Car Interior Roof?

Car interior roof cleaning steps are: 1. Fold down the seats and cover them with towels or seat covers to prevent contamination from water or cleaning agents dripping from the roof; 2. Fill a spray bottle with water and diluted cleaning solution, then spray it onto the roof; 3. After the cleaning agent foams, use a soft brush for cleaning to avoid pilling and damaging the roof fabric. Use a wrung-out cleaning cloth during the process, as the padding inside car roofs is typically made of heat-insulating and sound-absorbing material that can absorb water. If a wet towel is used, the roof material may become soaked with cleaning agent and difficult to dry, potentially leading to material peeling in severe cases. Always use a pH-neutral foam cleaning agent to prevent fabric corrosion, discoloration, and water stains on the car.
13
2
Share

What are the types of SUVs?

SUV is an independent vehicle type, and there is no such thing as types of SUVs. Below is a detailed introduction to vehicle types: 1. Overview: Vehicle type refers to a form of vehicle, distinguished by common features, intended use, and functions. For example, sedans, trucks, buses, trailers, and incomplete vehicles are all separate types. 2. Others: Heavy-duty vehicles have a length greater than or equal to 6m and a total mass greater than or equal to 12,000kg. Medium-duty vehicles have a length greater than or equal to 6m and a total mass greater than or equal to 4,500kg but less than 12,000kg. Light-duty vehicles have a length less than 6m and a total mass less than 4,500kg. Mini vehicles have a length less than or equal to 3.5m and a load capacity less than or equal to 1,800kg.
5
5
Share

How to Identify the Quality of Gasoline?

Methods to identify gasoline quality: 1. Observe the color: High-quality gasoline is generally light yellow or colorless and transparent, while inferior oil appears dark or cloudy; 2. Smell the odor: Good-quality gasoline has a faint aromatic smell without any irritating odor. If the aromatic smell is strong, it may indicate a high content of aromatic hydrocarbons. If there is any strange or foul odor, it might be leaded gasoline or low-grade oil mixed with water; 3. Feel the texture: Pour a small amount of gasoline on your hand. If it evaporates quickly, the oil is of good quality; 4. Listen for sounds: If the car engine behaves abnormally after refueling, such as producing harsh noises, backfiring exhaust, or knocking sounds, it could indicate poor fuel quality.
13
0
Share

Can a Used National 5 Vehicle Be Licensed?

Whether in regions where the National 6 standard has already been implemented or in those where it has not yet been implemented, used vehicles meeting the National 5 emission standard can be normally transferred and licensed. The relocation policies of various cities in the country have not changed, and the trend of national policies is to gradually remove restrictions on used vehicles. Some cities have already lowered their relocation standards, so the cross-region transfer of National 5 used vehicles is also possible. Precautions for purchasing used vehicles: 1. When buying a used car, first walk around the vehicle to check if all four tires are properly inflated. 2. Observe whether the tire brands are consistent. 3. Inspect the front wheels. 4. Check the wheel bearings of the used vehicle. 5. After the used vehicle transaction is completed, require the buyer to promptly deliver the relevant documents.
7
4
Share

How Often Should the Mercedes Air Filter Be Replaced?

According to the vehicle's maintenance manual, the car's air filter should generally be replaced every 10,000 to 20,000 kilometers or during every other maintenance service. However, it is recommended to clean the air filter every 5,000 kilometers to reduce the buildup of throttle sludge. The location of the air filter varies depending on the intake system design and engine structure. It is typically located within the air cleaner housing attached to the engine's intake pipe. There are two types of automotive air filters: dry and wet. Dry filters are made of paper or organic materials, while wet filters are constructed with metal mesh. The function of the air filter is to remove particulate impurities from the air, ensuring sufficient clean air enters the cylinders and preventing airborne dust from being drawn into the engine, which accelerates wear on piston assemblies and cylinders. Mercedes C-Class Air Filter Replacement Tutorial Location: Right side of the engine bay, connected to a prominent large intake pipe. The tools required for removing the air filter are common and should be prepared in advance (Phillips screwdriver, flathead screwdriver, hex socket, etc.). Locate the air filter housing and use the appropriate tools to loosen the fasteners. Lift the air filter housing cover to access the old filter. To determine if the filter needs replacement, it is convenient to remove it from the housing. If the filter is slightly dirty, it can be cleaned with compressed air and reused. However, if the filter is damaged or excessively dirty, it should be replaced immediately. Note: Some models may require disconnecting rubber couplings when removing the air filter. Air Filter: A filtration device also known as an air filter cartridge, air cleaner, or air element. It is primarily used in engineering vehicles, automobiles, agricultural machinery, laboratories, sterile operating rooms, and various precision workspaces. The engine draws in large amounts of air during operation. Without filtration, airborne dust entering the cylinders accelerates wear on piston assemblies and cylinders. Larger particles entering between pistons and cylinders can cause severe cylinder scoring, particularly in dry and sandy environments. The air cleaner is installed before the carburetor or intake manifold to filter out dust and sand, ensuring sufficient clean air enters the cylinders. Dirty Air Filter: Using a heavily soiled air filter while driving can restrict engine airflow, leading to incomplete fuel combustion. This results in unstable engine operation, reduced power, and increased fuel consumption. Therefore, it is essential to keep the air filter clean. The automotive air filter is a device that removes particulate impurities from the air, consisting of one or more filtration components. Its primary function is to filter harmful impurities from the air before it enters the cylinders, reducing premature wear on cylinders, pistons, piston rings, valves, and valve seats. Thus, air must pass through the fine filtration of the air cleaner before entering the cylinders. A dirty air filter can cause poor engine performance, excessive fuel consumption, and engine damage. When inspecting the air filter, if minimal dust and light clogging are observed, it can be cleaned with high-pressure air from the inside out and reused. Severely dirty air filters should be replaced promptly.
3
3
Share

Is It Illegal to Install a Rear Wing on a Vehicle?

Installing a rear wing on a vehicle is not illegal, as long as the modification does not exceed 60% of the vehicle's body area. In such cases, there is no need to apply for a change registration with the traffic management authorities. However, if the modification exceeds 60%, it is mandatory to register the changes; otherwise, the vehicle will not pass the annual inspection. If the vehicle owner's residence moves within the jurisdiction of the traffic management authorities, or if the owner's name or contact information changes, it must be reported to the traffic management authorities where the vehicle is registered. Unauthorized changes to the registered structure, construction, or features of the vehicle—including modifications to the power system, lighting, operation, exhaust emissions, cooling, braking, soundproofing, suspension, steering system, external structure, body color, tires, or rims—must also be reported.
11
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.