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.

A: If you are having to top off the oil once a...

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!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: can I use 5w30 grade for 0w20 in engineoil for landcruiser 1ur-fe engine

Yes, per the manufacturer's specifications, 5W30 grade is the recommended oil for this motor.

Q: When I try to start the car it clicks with a little white smoke coming out

This is a common sign of a failing starter solenoid. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity to the starter. When this fails, it may cause a clicking sound and will...

Q: My turbo diesel Triton, btwn 70kms and 80kms starts kicking. At idle sounds and feels like its going to stall.

Hey there, thank you for asking about your Mitsubishi. This is a common issue with many cars when a part called the mass airflow sensor begins to fail. This is a unit that monitors the air intake as it is...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...