Q: Overheating issue and coolant draining after replacing head gasket

asked by on

My boyfriend has replaced the head gasket and after running the car for a few minutes the coolant/water is completely drained. The thermostat was replaced 3 times to be sure it wasn't the issue, the fan is kicking on for the radiator and there is no oil mixing with the coolant and no coolant mixing with the oil. Also the head was tested and it is not cracked. HELP!

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

Hello. Was there any issue with the coolant before this point? If so, the blown head gasket may be a result of the engine overheating due to lack of coolant. You should start by pressure testing the cooling system. Make sure the coolant is topped off. While cool, install the cooling system gauge in place of the radiator cap and pump it to the rating for your cooling system (it will be listed on the cap or engine diagram). Check the system or any leaks visible to the naked eye. Also watch the gauge and look for the pressure to drop. Release the pressure and retest with the vehicle running. Let the pressure build on its own. Again, measure the pressure and watch for it to raise higher that the rating listed, or for it to drop steadily. If the coolant is leaking from the engine that quickly, the point in which the coolant is flowing from should be very evident. Focus on that point for the repair.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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!
  1. Home
  2. Questions
  3. Overheating issue and coolant draining after replacing head gasket

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: Been heating up

Hello - you may have a failing AC compressor or compressor clutch. This could cause the squeak and lack of cooling you mention. I would recommend having a AC is Not Working Inspection completed by a mobile, professional mechanic, such...

Q: Valve lifter replacement, can't get TDC. Do I need to get TDC for head removal and lifter switch?

Hi there. Before removing the cylinder head the rocker arms and the push rods need to be removed. When removing the rocker arms, they will need to be loose and not tight. You do not need TDC, but close to...

Q: EPS issue on 2002 Honda S2000

EPS systems will communicate with a professional scan tool. Inasmuch as all of the "faults" you refer to are possible, the fastest way to resolve this is to simply download the trouble codes that have set and/or use a real...

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 Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...