Skip the auto shop - Our mechanics make house calls

Q: How can I rule out a head gasket as a reason for my truck overheating?

asked by on

I am trying to fix an overheating problem. I replaced a leaking hose. I replaced the radiator cap. I replaced the thermostat. I replaced the water pump. I suppose my only two options left are the radiator and head gasket.

My car has 175000 miles.
My car has an automatic transmission.

A: You will need to do a pressure test on the ...

You will need to do a pressure test on the cooling system to see if there is coolant leaking from the radiator or the head gasket. The other test is to do a compression test on all the cylinders and a cylinder pressure test to see if there is compression going out the radiator. If you will need help getting this checked, consider YourMechanic, as a certified mechanic can come to your home or office to run these tests to diagnose your car's overheating problem.

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: AC not working at idle

Your symptoms lead me to believe you may have a problem concerning your cooling fans at the front of the vehicle. While the engine is running and the car sitting still, both fans should come on when the air conditioning...

Q: My Truck will not go forward or backards when pushing on the gas.

The first thought I have is the throttle cable is broken. But you state it will briefly move when you push on the gas pedal. The only way I can think of for this to occur is if the throttle...

Q: A lot of smoke coming from the car. What's the issue?

Hi, thanks for writing in. If you have smoke being emitted from your vehicle, it is likely due to a fluid that is leaking and landing onto a hot surface such as the exhaust. Typically when smoke comes from under...

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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...