Skip the auto shop - Our mechanics make house calls

Q: Coolant and some white smoke are leaking out of the exhaust

asked by on

Im hoping its not a head gasket and its just my egr cooler. I need help before i make a major decision.

Hi there. Failure of the head gasket would more likely include symptoms like overheating and possibly coolant in the engine oil - results in a "chocolate milkshake" mixture, as well as coolant loss. Failure of the EGR cooler will not cause these effects. Failure of either results in a sweet smell out of the tailpipe and white smoke as you have noticed. There are tests for combustion gases in the coolant that would confirm that a head gasket has failed. I would recommend having a coolant is leaking inspection completed by a mobile, professional mechanic, such as one from YourMechanic, to diagnose this problem, get an accurate assessment of damage and cost estimate for 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・Fair and transparent pricing

Get a quote

What others are asking

Q: Thumping sounds while driving over sharp bumps

The only part you did not mention and the most likely cause of the problem is the inside lower control bushings which could possibly be bad. I would also check the steering gear mount bushings for excessive wear. Both of...

Q: Oily thick coolant

Hi there. This is a sure sign of a blown head gasket. This can happen when the car overheats causing the cylinder head gasket to fail. When this happens, this will allow oil to leak into the engine coolant passages...

Q: Strong odor of fuel, black smoke on take off, and rough running

Hey there. The rough running condition is definitely related to the black smoke and fuel smell which indicates the motor is running rich or being supplied with too much fuel. This can happen for a variety of reasons such as...

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 Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...