Car Running Rough After Oil Change: What Could Be Wrong?

Have you ever noticed your car running rough after an oil change? It might sound like a serious issue, but often, it has a simple explanation, such as a loose oil cap or a missing bolt. In this article, we'll explore why your car might run rough and what you can do to resolve the problem.

Why Does My Car Run Rough?

In most cases, a car running rough has little to do with the oil itself. However, improper oil servicing can sometimes lead to issues. If the oil cap was left loose or not replaced at all, the lubricant may not be distributed effectively, leading to rough idling. This is particularly true in older vehicles, where vacuum hoses can deteriorate over time, even though they may still appear functional.

Understanding the Symptoms

If your car started running louder, experiencing trouble accelerating, and a drop in fuel efficiency after an oil change, it's more likely a mechanical or fuelling issue. Specifically, a lack of sufficient air to the engine could cause these symptoms. This might be due to a missing bolt or bracket that secures the air filter housing, leading to a decrease in airflow to the engine.

A Real-Life Example

One recent incident involved a Lyft driver who noticed these symptoms after an oil change at Take5. Initially, they hypothesized that a fuel injector cleaner might solve the problem. However, a visit to a professional mechanic uncovered a serious issue: the bolt for the air filter housing was missing, and another harness-type bracket was also lost.

The mechanic suspected that the loose bolt and harness were dislodged during the oil change process or while driving. This left the engine starved for air, negatively impacting performance. The driver paid a significant amount for gas inefficiency and had to spend $166.30 to fix the issue, including a new bolt and metal harness.

Preventive Measures

To avoid similar issues, follow these steps after an oil change:

Inspect the oil cap to ensure it is tight and properly secured. Check the air filter housing for any missing bolts or brackets. Verify all hoses and attachments are secure, particularly those leading to the throttle body.

While these steps are relatively simple, they can save you both time and money in the long run. If you work for a service that may lead to such issues, be extra vigilant about checking these components.

Conclusion

In summary, many issues a car runs rough after an oil change can be resolved by regular checks and timely maintenance. If you're a frequent driver of a car that needs more servicing, like Lyft drivers, extra attention to these details can prevent costly repairs and ensure a smoother driving experience.