Skip the auto shop - Our mechanics make house calls

Q: There is smoke coming from my car.

asked by on

i do top up engine oil once every month and smoky
My car has an automatic transmission.

If you are having to top off the oil once a month, depending on how many miles you drive per month, this may suggest that your engine is burning the oil. If the smoke is a blue colored smoke, this is an indication that the oil is being burnt with the fuel. When this happens, it is usually due to worn piston rings allowing the oil to pass by the pistons up into the combustion chamber.

This can also happen when the valve guide seals are bad, resulting in oil from the valve train leaking down into the combustion chamber as well. I would recommend having an expert from YourMechanic come to your location to inspect for the source of the smoke and suggest any needed repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. There is smoke coming from my car.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Advice on using and changing transmission fluid on Honda

Hondas are extremely particular about what kind of fluid they use. That's just the way Hondas are. What I would advise you to do is change the fluid and use the Honda fluid. I wouldn't switch fluids because Hondas have...

Q: Motor smokes

Hi there. If the engine is smoking in the engine compartment area, you probably have a leak. When engine oil leaks out due to a bad gasket, it hits a hot engine part causing the smoke. This causes the oil...

Q: My car is having issues starting and running in the cold

Hi there. It sounds like the idle speed control motor could be struggling during a cold start. There could also be a vacuum leak that is allowing too much air into the intake during a cold start; cold starts require...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...