Skip the auto shop - Our mechanics make house calls

Q: There is no visible leak in radiator. But daily I have to pour 100ml coolant in radiator. Gasket also recently changed...

asked by on

My car radiator drinks coolant daily. But there is no leaks in radiator and in hoses. Even I have changed my Head gasket recently. Can u pls give me tips. What is the problem?

My car has 180000 miles.
My car has an automatic transmission.

A: If you have to keep adding coolant daily an...

If you have to keep adding coolant daily and there are no external leaks, the only place for the coolant to go is in the engine. Check the oil to see if the oil is getting milky (looking like chocolate milk) indicating water is in the oil. If that is okay then the only other place is for the coolant to go into the combustion chamber. You stated you changed the head gasket. If your engine has overheated before and the head gasket blew, then you may have also cracked the cylinder head. Most of the time the head will crack between the valves in a coolant jacket, and if you did not have the head pressure tested, this may be the problem now. You can have the cooling system pressure tested and see if coolant gets into one of the engine cylinders. This is done by removing all the spark plugs and pressure testing until it loses pressure, then cranking the engine. Coolant will blow out of the cylinder that has a crack. If this is the problem then a replacement head will be needed.

I suggest you have this issue inspected by a qualified mechanic. A certified mobile mechanic from YourMechanic can visit your home or office to inspect your vehicle’s coolant issues.

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: my wipers don't work i replaced the washer pump myself. Check for the blown fuse for the wipers and nope its not bown. Help please

Wipers not turning on can be due to a few components. If the fuse is good, the wiper relay may be at fault, not signaling the wiper motor to turn on. Also, the wiper switch could be faulty, not sending...

Q: Can't Figure Out Engine Noise

Typically, I would perform an initial diagnosis by disconnecting the serpentine belt and operating the engine for a minute. That belt drives a lot of devices that can make a lot of noise and thus a whole collection of possibilities...

Q: Have a Mitsubishi Lancer 30th anniversary 2011, making a rattling noise when accelerating and loss of power. There is occasional smoke.

Hi there. The rattling noise is the ignition system being too retard or advanced as the engine is accelerated. Check the camshaft position sensor and see if the sensor is connected and sending a voltage reference to the computer. To...

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 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...