Q: Coolant coming out the cap causing smoking when driving i dont know why

asked by on

Coolant tant looks full on the out side but when i open the cap i dont see anything so i put water in the tank ..and then when i drive car smokes but its because water/coolant coming for the Cap
My car has an automatic transmission.

Hi there:

The smoke that you’re seeing is evaporated steam caused by an overheating situation. This could be caused by several mechanical issues going on inside your car such as a coolant leak, an obstruction in the coolant lines (like an air bubble or debris), a broken thermostat or water pump issue. If the overflow tank was empty, then its likely that your coolant level was very low or that you might have a leak.

My best advice would be to contact a local ASE certified, such as one from YourMechanic, who might start with a radiator flush and diagnose any other issues that are causing the overheating situation.

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. Coolant coming out the cap causing smoking when driving i dont know why

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: I have a 95 dodge intrepid. I'm wondering if the control arm and assembly is what is connected to my strut.

Hi there. The struts on the front of your vehicle are attached to the lower control arm with a ball joint, a sway bar with sway bar extensions, the tie rod ends to your steering system, and the knuckle hub...

Q: Ticking when accelerating

With the information that you've provided, I think you are describing an exhaust leak. It's not uncommon for a minor exhaust leak to tick, especially when cool, and then go away as it warms up. It can also increase when...

Q: coolant bottle

Hey there. The coolant bottle on this car hold pressure and the material can only be sealed using a plastic welding or melting process. Otherwise, replacement is the only recommended repair. The replacement of the bottle is recommended before engine...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
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...
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...