Skip the auto shop - Our mechanics make house calls

Q: I put new coolant in my truck and as I was driving it started smoking and smelled like coolant and sprayed all over under my hood,

asked by on

The coolant sprayed everywhere and there was smoke under the hood. Why was this happening? Now it's bubbly when trying to take off the radiator cap what do we do?

My car has an automatic transmission.

If you have a lot of pressure on your upper radiator, you have likely come across a thermostat issue. Did you put the wrong color of antifreeze in your truck? If you did, this is the problem, but I’d still suggest replacing the thermostat. If your hoses aren’t tight you may have a water pump problem, but this is less likely to be the issue. A certified YourMechanic technician can come to your location to inspect this issue with coolant and help you diagnose your vehicle.

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!
  • Home
  • Questions
  • I put new coolant in my truck and as I was driving it started smoking and smelled like coolant and sprayed all over under my hood,

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: Car turns over fine but will not start. New battery, fuel filter, fuel filter relay, and crankshaft sensor

You need to see if you hear the fuel pump in the fuel tank run when you try and start it. The pump is located under the rear seat on the passenger side. There is a fuel pump module on...

Q: Coolant seems to disappear

If this "just started", it may be that there was trapped air in the system, since you did the water pump replacement, and so all you are doing is providing make up coolant at the moment. But, if the coolant...

Q: Exhaust manifold

These manifolds have 4 bolt holes and may have two bolts and two studs that have nuts with washers.

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...