Q: How to know if my head gasket is blown

asked by on

I've had problems with losing coolant buy can't find a leak. I replaced the water pump cause it went out. Today i changed the thermostat and for the first time my car blew thick white smoke out of exhaust. It slow went to a constant white smoke but not so thick. My low coolant light is on now. The coolant reservoir starts to overflow right away. And now it's having a high idle and stalls after idle comes down. Smells like burnt antifreeze. Still no coolant mixing with oil or vise versa. Please help.

My car has 192000 miles.
My car has an automatic transmission.

Hello. The white smoke coming out of the exhaust is a sure sign that the head gasket is blown or the head is cracked. This engine is very common to have cracked heads between the valves when the engine has been overheated. You may find cracks in the heads when the engine is torn down to check for blown head gaskets.

Was this answer helpful?
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. How to know if my head gasket is blown

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: Smoking and smell of antifreeze

If you engine just started to pour white smoke out the exhaust then most likely you just blew your head gasket. It could be from overheating or corrosion inside engine caused the head to leak coolant into the cylinders and...

Q: Q: Loose steering wheel

Hello. Thank you for writing in. The vehicle may be having one of several issues. Typically the steering wheel is not the issue when the steering becomes loose. Now if the entire steering column is loose, you can worry about...

Q: Bad engine problems, should I get rid of the car?

You say the first engine overheated and the head gasket was replaced. I assume the thermostat was the cause. Depending on how hot the engine got before blowing the head gasket, it must of weakened the engine block so that...

Related articles

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...
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.