Skip the auto shop - Our mechanics make house calls

Q: Antifreeze drains out of radiator

asked by on

The antifreeze drains out of the radiator, but I don't see any fluids leaking out from under my car.

A: Hello. If the coolant is mysteriously disap...

Hello. If the coolant is mysteriously disappearing and no leaks are present under the vehicle, I suspect that the head gasket may be leaking coolant and evaporating it internally. The head gasket is a gasket which fits between the engine block and cylinder head that directs fluids. A sign of a leaking head gasket is white smoke exiting the muffler. I would suspect that the gasket is leaking since it is a fairly common problem on earlier civics. I suggest having the head gasket tested by a technician with a head gasket tester. The tester will test the coolant for any gases present. If there is a trace of gas in the coolant, that means there is a head gasket leak. If you need further assistance, I recommend you have a mechanic, like one from YourMechanic, inspect the coolant leak and replace any damaged parts.

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: How do I find out why my car has a huge flat spot

This could be a variety of things related to air and fuel delivery to the engine. There are a few things that are common to go bad and cause these types of problems. If the mass airflow sensor which regulates...

Q: Over Heating Frequently

Overheating is bad for the engine and if the temperature gets high enough, you'll ruin the engine (the high heat warps the head, block and manifolds causing leaks). Causes of overheating: low coolant level (due to internal or external leaks);...

Q: Car overheated on freeway

Hello. If the car will only overheat on the freeway and not anywhere else, I suspect you may have a common civic issue, which is a failing head gasket. Head gasket repair is generally pretty expensive. But there are other...

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...
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...
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...