Skip the auto shop - Our mechanics make house calls

Q: White smoke.

asked by on

hello,

white smoke comes out of exhaust when I turn it on, not ever time but only if I leave the car with out using for more then 5 hours white smoke comes out, my car does not show no signs of over heating.

I have no idea what is wrong with it. please help

My car has 160000 miles.
My car has an automatic transmission.

If you are not having any loss of coolant in the system or any excessive oil consumption, then the exhaust may emit a small amount of white smoke from the exhaust. The smoke is a small amount of moisture that settles in the exhaust pipes and muffler when the vehicle cools down. Then when you start the car the heat of the exhaust causes the water to turn into steam as white smoke. You should also notice other cars in the area doing the same thing if you are in a humid or damp climate. The white smoke should only last a few minutes to no more than five minutes. If it does not go away then you will need to have the system checked by a professional mechanic. If you would like, a certified technician from YourMechanic can perform a thorough exhaust smoke inspection at your home or office.

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: Smoke blows from tail pipe

If you are getting excessive pressure build up in the crankcase, then you may have a clogged crankcase breather system. If the breather system is clean, then you may have a broken piston ring causing the buildup. Have the breather...

Q: How should my car be towed?

There are many instances in which you might want to tow your car. You might want to tow it behind an RV for instance. While some vehicles can be towed in almost any way, yours is not among them. You...

Q: My fuel gauge fluctuates between 1/4 and empty. A friend said that there was a way to reset it, it's supposed to be under the steering wheel.

There is no way to reset a fluctuating fuel gauge. The fuel gauge is bouncing or fluctuating for either the float in the fuel tank has a bad ground in the rheostat or the gauge cluster has a broke or...

Related articles

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 to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.