Skip the auto shop - Our mechanics make house calls

Q: Brown stuff shooting out of radiator

asked by on

My car is overheating. I have replaced the thermostat and the water pump, but it still overheats. My coolant reservoir is filled with dirt, and brown stuff keeps shooting out of my radiator. Also, my heater only blows cold air.

A: You could either have air trapped in your c...

You could either have air trapped in your cooling system, or you might have a bad head gasket. Based upon your description, I am leaning towards a bad head gasket. Testing the head gasket can be performed with a block test which pulls vapors from the bubbling coolant and turns the fluid a different color if it detects emissions in the coolant. If you would like to have your AC system inspected by a professional, a certified mechanic from YourMechanic can visit your home or office to diagnose the problem and make the needed 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

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Car overheating with coolant added.

This could be caused by a few different things most likely being a stuck thermostat not allowing coolant to flow, have a certified mechanic check to make sure the belt that spins the water pump is still in one piece...

Q: Engine skipping

Sounds like you have a misfire. Misfires are common and can be caused by several components. The most common component failure is spark plug, spark plug wires, and coils. Other things that can cause a misfire are bad injectors, low...

Q: Power window doesn't work

Hi there. If ALL of your power windows are not functioning this can lead to a bad relay, windows that cannot be individually lowered and raised. If you can roll the windows down individually a malfunctioning master switch would be...

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...
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...
How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...