How to Identify and Address Oil Burning in Your Engine

Oil burning can be an uncomfortable issue for many car owners. Whether you are a seasoned professional or a novice, being aware of the signs and symptoms is crucial in maintaining your vehicle's engine health. In this article, we will explore the common signs of oil burning, how to diagnose the issue, and steps to address it.

Signs and Symptoms of Oil Burning

The most obvious sign of oil burning is a rapid loss of engine oil. This can be detected by frequently checking the oil level using the dipstick. If the level drops more quickly than usual between oil changes, it could be a sign that your engine is burning oil. In my personal experience with my old Honda Civic, this was a recurring issue that only worsened over time. Despite not being a professional, I recognized the problem and sought help from a mechanic, who diagnosed a faulty piston ring.

Visible Symptoms

Another clear sign is seeing blue or grey smoke coming from the exhaust pipe. This indicates that oil is being burned alongside the fuel. Additionally, you may notice your car using more oil than usual, even if the dipstick level isn't dropping drastically. Unusual noises coming from the engine, such as knocking or tapping, can also be a clue that oil is being burned. These noises could indicate worn piston rings, valves, or cylinders.

Diagnosing the Issue

Diagnosing oil burning requires a bit of detective work. Here are some steps you can follow:

Check the Dipstick

If the dipstick is not showing any leakage of oil, this could indicate a few different issues. The problem could lie with a stuck PCV (Positive Crankcase Ventilation) valve, which may be opened or closed. Another possibility is that the valve stem oil seals are leaking. If you notice the engine consumption burnning 1 litre or 1 quart in 1000 kilometres or 600 miles, the engine is seriously burning oil and requires further inspection.

Look for Blue Smoke

Blue smoke emanating from the exhaust pipe is a strong indicator that your car is burning oil. Additionally, a significant amount of soot on the tailpipe also suggests oil burning. It’s important to note that minor smoke is normal, but excessive smoke might require attention.

Proactive Maintenance and Addressing Oil Burning

Preventing or addressing oil burning starts with proactive maintenance. Regularly checking your oil level and keeping track of any unusual noises or smoke can help you catch the problem early. If you own an older vehicle, these checks are especially crucial. By catching the issue early, you can save both money and frustration.

Steps to Take

Top-Up Oil: If your oil level is low, consider topping it up. In my case, I topped up my oil after 5000 kilometres, and the dipstick indicated it was at the full mark after cleaning the PCV valve. Service Intervals: Ensure you are within the recommended service intervals. I have around 1400 kilometres or 870 miles left in my 10000 kilometre or 6000 mile service interval, and the dipstick is at 3/4 of the way up between full and add. Regular Checks: Keep a close eye on your engine's health and perform routine checks.

Conclusion

Every engine burns a small amount of oil, but if the consumption exceeds a certain limit, it could be a sign of a serious issue. By being vigilant and proactive, you can prevent costly repairs and maintain the performance and longevity of your car. If you have any car-related questions, don't hesitate to reach out. I'm here to share my knowledge!