Skip the auto shop - Our mechanics make house calls

Q: Engine hesitation and blue smoke

asked by on

My Mazda 3 had engine hesitation around 3,000 rpms and bluish smoke came out of the exhaust. I had just added a quart of 5W-20 oil (my dipstick is hard to read so I may have put too much oil in). This continued for several miles. Any help will be appreciated.

My car has 57000 miles.
My car has an automatic transmission.

The blue smoke coming out of the exhaust is an indication that the motor is burning excessive oil. The Mazda 3 engines are known for this. When the valve seals become worn this can cause oil to seep into the combustion chamber allowing it to be ignited with the air and fuel resulting in the blue smoke coming out of the exhaust and increased burning of oil. This is usually a sign of an engine that needs to be rebuilt. I would recommend having an expert from YourMechanic come to your home to diagnose and repair.

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
  1. Home
  2. Questions
  3. Engine hesitation and blue smoke

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: Car not starting after sitting for a year

Hello, when a car is stored, things can go bad just from sitting. The first thing to check are all of the fuses. If the fuses are good, then further diagnosis will be needed. I'm not sure if you have...

Q: Ignition Coil

Hi There, What you are describing sounds like an ignition coil pack that may be failing. Ignition coils are prone to this type of erratic functioning or heat cycling when they are beginning to fail due to the temperature fluctuations...

Q: Jeep hesitating and then taking off

From the information provided on your Jeep Liberty, it leads me to believe that the problem may actually lie with the transmission and not with the fuel filter. After shifting into gear, if there is a delay in the engagement...

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...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...