Why does the car lack power after an oil change?

2 Answers
GiannaLee
08/27/25 8:28am
The reasons why the car lacks power after an oil change are as follows: 1. Oil quality issue: If you previously used a certain brand of oil for a long time and then switched to another brand of the same type, the vehicle may exhibit insufficient power during driving, struggling or lacking strength when climbing hills. This could be due to the newly changed oil being too thin or of poor quality. Switching back to the original oil eliminates this issue. 2. Car engine problem: Caused by insufficient engine power. 3. Oil filter issue: A faulty or clogged oil filter. Generally, when changing the oil, the filter should also be replaced, so changing both can improve surface performance. 4. Engine lubrication system problem: If the engine lubrication system has not been cleaned for a long time and is very dirty with many deposits, changing the oil will wash out some impurities suspended in the oil, causing the oil filter to clog and resulting in insufficient power. Changing the oil once can make the system cleaner and improve performance.
Was this review help?
19
2
Share
WillowLynn
09/09/25 7:09am
I just changed the oil in my car but it won't start, the engine is knocking and can't run properly. This situation is mostly caused by air entering the oil system during the oil change, preventing the oil pump from quickly building up oil pressure. After pouring in new oil, it needs to flow through various engine components to provide lubrication. If the oil level is too low or too high, air bubbles can get trapped in the filter or oil lines, blocking the oil passage and causing insufficient engine lubrication, leading to knocking and stalling. It's best to start the car and let it idle for a minute or two after changing the oil to stabilize the oil pressure before driving off. Also, remember to use the correct oil brand and avoid cheap counterfeit products. Develop the habit of regularly checking the dipstick to ensure the oil level is within the standard range, as this can prevent many problems. After all, car maintenance is not something to be careless about.
Was this review help?
2
3
Share
Expand All
More Forum Discussions

How to Remove Cement Stuck on the Car?

Methods to remove cement from a car are as follows: 1. When the cement is still soft, wet and soak it with water, then use car wash soap and a towel to slowly clean it off. 2. If the cement has hardened, apply acidic solution with a brush to the cement area, then rinse thoroughly with water. 3. Pour gasoline onto the cement area, wait for it to soften, and then remove it by hand. 4. Use a hair dryer to heat the cement area until it falls off automatically. 5. Spray white vinegar onto the cement area with a spray bottle, wait for 3 to 5 minutes, then gently scrape it off with a hard card. 6. Apply toilet cleaner evenly on the cement area, rinse the car body with plenty of water, and promptly apply local waxing.
16
0
Share

How to Remove the Taillight of a Nissan Teana?

Open the trunk lid of the Nissan Teana, remove the inner felt or rubber lining near the two taillights in the trunk to expose the taillight assembly, then use tools to remove the taillight and unplug the power connector. The steps to remove the rear taillight are as follows: 1. Removal of the trunk inner lining: After opening the trunk, first remove the inner lining on one side of the rear taillight. The inner lining is secured by several plastic clips. Use a small flathead screwdriver to pry these clips open, then pull the inner lining away by hand. Be careful to pry slowly to avoid damaging the plastic clips. 2. Removal of the taillight fixing nuts: There are three nuts securing the rear taillight. Use a small ratchet with an 8mm socket to remove the three nuts one by one and set them aside. 3. Removal of the taillight wiring harness: The taillight wiring harness has only one plug. Simply pull this plug out by hand. If it's difficult to remove, gently pry it with a small flathead screwdriver. 4. Replacement of the rear taillight: After unplugging the wiring harness, the rear taillight can be removed. Hold both sides of the taillight with both hands, then gently pull outward while slightly shaking it to remove it. Be careful not to use excessive force.
17
4
Share

What are the advantages of a body-on-frame structure?

The advantages of a body-on-frame structure are as follows: 1. High body strength, with an independent frame that enhances body rigidity; 2. Higher chassis strength and better anti-jolting performance; 3. When the four wheels bear uneven forces, the frame absorbs the impact without transferring it to the body. 4. Minimal cabin deformation, with high stability and safety. The disadvantages of a body-on-frame structure are: 1. The frame is heavy, has a high center of gravity, and increases wind resistance, which negatively impacts fuel efficiency. 2. Limited interior space utilization. 3. While mounting the spare tire on the tailgate makes the vehicle look more imposing, protects the spare tire well, and allows for easy access, it can lead to rattling noises over time.
16
2
Share

Where is the cabin air filter located in a Ford Fiesta?

The cabin air filter in the Fiesta is located on the left side under the front passenger seat, behind the glove compartment. You can access it by removing the glove compartment. The functions of the cabin air filter include: 1. Ensuring a tight seal against the housing to prevent unfiltered air from entering the cabin. 2. Filtering out dust, pollen, abrasive particles and other solid impurities from the air. 3. Providing fresh air to the vehicle interior, protecting occupants from inhaling harmful gases and ensuring driving safety. 4. The Fiesta measures 3980mm in length, 1722mm in width and 1470mm in height, with a wheelbase of 2495mm. The vehicle's engine delivers a maximum horsepower of 125Ps, maximum power of 92kW and maximum torque of 170Nm.
6
0
Share

How to Remove the Film from the Front Windshield?

Methods for removing the adhesive residue from the front windshield film are as follows: 1. Use a cotton swab to apply vinegar to the remaining adhesive. Once the vinegar dissolves the adhesive, wipe it off patiently with a cloth. 2. Apply essential balm to the adhesive and scrape it off with a knife. 3. Evenly apply alcohol to the remaining adhesive. After the adhesive softens due to the alcohol, wipe it clean. 4. Spray a specialized heat-insulating cleaner on the remaining adhesive. It will melt in a short time, and you can then wipe it clean with a cloth. Extension: Maintenance methods for the car's front windshield include: using specialized or suitable wiper blades and replacing them in time; keeping the glass surface clean; and using car-specific glass cleaner.
3
2
Share

Why Do Modern Diesel Vehicles Require Urea?

Here are the reasons why diesel vehicles require urea: 1. During operation, diesel vehicles emit harmful nitrogen oxide gases that damage both the atmosphere and human health. Prolonged exposure to these gases can cause respiratory diseases. To mitigate these harmful effects on the atmosphere and human beings, urea is utilized. 2. The use of urea in diesel vehicles involves a catalytic reaction. When urea encounters nitrogen oxides emitted by diesel engines, a chemical reaction occurs, converting the nitrogen oxides into nitrogen and water, both of which are harmless to the atmosphere and human health.
15
0
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.