Why is My Car Shaking After an Oil Change?

After getting an oil change, it can be quite unsettling to feel your car shaking. The maintenance procedure itself doesn’t directly cause the shaking, but several factors can contribute to this issue. Understanding the potential causes can help you address the problem swiftly and get back to smooth driving.

1. Loose or Damaged Engine Parts

One possible explanation for your car shaking after an oil change is that certain engine parts may have become loose or damaged during the process. These parts could include spark plugs, ignition coils, or even vacuum hoses. When they are not properly secured or in good condition, they can result in engine vibrations.

If you suspect this to be the reason, it’s recommended to consult a mechanic to inspect and tighten any loose parts. They may also need to replace damaged components to resolve the issue.

2. Contaminated Fuel System

Another potential culprit behind the post-oil change shaking is a contaminated fuel system. During the oil change, it’s possible for dirt, debris, or even water to enter the fuel tank. When these impurities mix with the fuel, they can affect the engine’s combustion process, leading to rough idling and vibrations.

To address this, consider using a fuel system cleaner or additive to remove any contaminants from your fuel system. Additionally, it’s advisable to check and replace the fuel filter if necessary.

3. Engine Misfire

An engine misfire is when one or more cylinders fail to ignite properly. This can cause your car to shake, especially after an oil change. Factors like faulty spark plugs, damaged ignition coils, or a disrupted fuel supply can contribute to this problem.

To troubleshoot an engine misfire, inspect the spark plugs for signs of wear or damage. If necessary, replace them with new ones. It’s also crucial to ensure proper fuel delivery by examining the fuel injectors and checking for any blockages.

4. Improper Oil Viscosity

Choosing the wrong oil viscosity for your car’s engine can also result in shaking after an oil change. If the oil is either too thick or too thin for your engine’s specifications, it can affect lubrication, leading to increased friction and engine vibrations.

Refer to your owner’s manual or consult a professional to ensure you are using the correct oil viscosity for your vehicle. Using the appropriate oil can prevent unnecessary shaking and protect your engine.

5. Engine Mount Issues

Lastly, a potential cause of shaking after an oil change could be related to engine mounts. Over time, these mounts can wear out or become damaged, which can cause the engine to vibrate excessively.

If you suspect engine mount issues, have a mechanic inspect them for any signs of wear or damage. Replacing faulty mounts will help stabilize the engine and eliminate the shaking.

In conclusion, experiencing car shaking after an oil change can be disconcerting, but there are several potential causes and solutions. Loose or damaged engine parts, a contaminated fuel system, engine misfire, improper oil viscosity, and engine mount issues are all factors that can contribute to the shaking. Addressing these issues promptly by seeking professional help or performing necessary maintenance can help restore your car’s smooth operation.