Skip the auto shop - Our mechanics make house calls

Q: Engine sputtering

asked by on

When turning on the car, the engine starts sputtering. Little grey smoke coming from exhaust. What might be the problem with my car?

My car has an automatic transmission.

A: Hi there, thanks for writing in. There are ...

Hi there, thanks for writing in. There are a lot of possible causes of this. Most of the time it is caused by a fuel system issue. When you get smoke like this it is usually caused by excessive fuel entering the engine. It may be a bad fuel regulator, a leaking injector, or even a bad sensor. If an oxygen sensor is reading wrong this can occur. I would usually scan the computer for codes to see if the computer has identified any problems. If not then I check all of the sensor readings with my scan tool. If nothing shows up there either then I check the fuel system for any leaks that are internal. If you would like help, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this sputtering and smoke issue for you, and make or suggest any repairs as needed.

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

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: Bounces up and down over little bumps

Excessive bouncing is caused by worn out or leaking shocks and struts. Go to each corner of the vehicle and push down and let go of the car. It will bounce more than once then that shock or strut is...

Q: The gear shiter is stuck in park I have to manually shift it and the brake lights don't work.

Hi, thanks for writing in. There are several causes for the symptoms you are having. First, if you need to unlock the shifter, there is an override button you can use to unlock it. It will be a small slot...

Q: 1970 Ford Custom pickup with automatic transmission won't shift out of first gear after pulling someone out of the mud.

Hi there. Check the transmission fluid and make sure that it's full. If the fluid is good, then either the shifter cable could be stretched or the main valve on the transmission may have came off the shifter inside the...

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...
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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.