Q: Emission light with smoke out the back of car

asked by on September 30, 2016

last week the car was smoking very bad then it stopped today the emissions light came on and was smoking from the back of the car is this a serious problem and what would have to be done to fix this

Air Filter Replacement $104.43 - $174.79 Get a Quote
Fuel Injector Replacement $400.56 - $3968.30 Get a Quote
Smoke from engine or exhaust Inspection $94.99 - $114.99 Get a Quote

Hi there. It really depends on the color of the smoke. If it is black then it can be a dirty air filter or a leaking fuel injector. If the smoke is white then it may have a leaking head gasket. If the smoke has a blue cast then the engine is burning oil which can be valve stem seals, or more commonly on this engine a bad turbo.

A diagnostic would need to be done depending on the kind of smoke that is appearing. If you want to have this looked at, consider YourMechanic, as a certified mechanic can come to your home to diagnose the smoke firsthand and help you make the necessary repairs.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I reduce the cruise control speed?
When in cruise control, you can reduce the speed by rotating the steering wheel-based thumbwheel downwards, towards Set/-. Release the thumbwheel when you have reached your desired speed.
Tire making grinding noise while in motion
Hello. It sounds like you have a bad wheel bearing. Worn wheel bearings usually make a rotational grinding or growling noise that is proportional to vehicle speed. Wheel bearings are very important since they allow the wheels to rotate and...
Water leaking into the rear floorboard
The sun roof drains are plugged in the channel that is in the front. Open the sun roof and look in the rain channel and look for the drain holes. Try and pour some water in the hole and see...
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...
My engine will not start. It will only make a clicking noise. 1999 Chevrolet Tahoe
Hello. If you are getting a clicking noise when trying to start the vehicle most of the time it is either the battery or starter. I usually start by load testing the battery. If the battery does not pass then...
I have a 2009 Chevy aveo. The temperature gauge is under C and the hold button is flashing. I have a/c and heat is working.
Hi there. When the temperature gauge displays below the "C" - this is typically an indication that either the coolant temperature sensor is damaged or the display gauge itself is faulty, has a blown fuse or there is a communication...
Dirty fuel? Van not responding, engine making weird noise and cutting out
Hi Claire, It sounds like you may have popped a fuel pump relay (https://www.yourmechanic.com/services/fuel-pump-relay-replacement). I would suggest checking the relays in the fuse box under the hood to see if the fuel pump fuse is burnt. When turning the key...
Key stuck in ignition car is dead
This is a known issue with the Pontiac G5 and can be caused by a couple of different possibilities. One possibility is related to the transmission shift lock assembly or position indicator sensor (https://www.yourmechanic.com/services/transmission-position-sensor-switch-replacement) which is what prevents the key...
the sliding door lock in frozen in the locked position is this an indicator that the actuator needs replaced?
There is a motor in the lock actuator. Premature wearout of the motor is a known reported issue. The testing consists of ensuring that power is being delivered to the actuator, that is ensuring that the electrical connections to the...

Related articles

Symptoms of a Bad or Failing Emergency / Parking Brake Cable
Common signs include the parking brake not holding the car properly (or not functioning at all) and the Parking Brake Light coming on.
What Does the AdBlue Warning (Low Level, No Restart, Malfunction) Warning Light Mean?
The AdBlue warning light usually means the diesel exhaust fluid is low, which will eventually prevent your engine from starting.
What Does the Trailer Tow Hitch Warning Light Mean?
The trailer tow hitch light is designed to warn you when there is an issue with your car's tow hitch, possibly that it is unlocked.