Skip the auto shop - Our mechanics make house calls

Q: Water leak

asked by on

Every time I move my car, I need to add a gallon of water to only have to put more water in five minutes later.

Hi, I’m assuming you are adding this to the cooling system. If there are no puddles developing underneath the car then there is an internal leak somewhere. Typically the head gasket is damaged somewhere and the mixture of coolant and water could be contaminating the oil or getting into the cylinder which can seriously damage the heads or pistons. If there is coolant getting inside the cylinder, you should be able to see steam coming out from the tailpipe.

If nothing comes out of the tail pipe, check the dipstick. Oil that is contaminated with water and coolant will be milky. This should be repaired as soon as possible as all of these possibilities are bad for the engine. Running low on coolant risks overheating the engine, contaminated oil doesn’t lubricate the engine as well, and water doesn’t compress in the cylinders which can damage the valves. One of our certified technicians here at YourMechanic would be able to help you diagnose the issue further and help determine the source of the leak.

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: Camshaft Position Sensor Bank 1

I would suggest to only replace the one sensor first and clear the codes and road test to make sure the code does not return. Do not put on two sensors at the same time or if there is a...

Q: Car getting hot

Hello. There are several things that could be causing your car to overheat. If the water pump or thermostat is bad, or if the radiator or heater core is clogged or leaking, your car may overheat. The worst case scenario...

Q: Engine light on

In most cases, the P-0137 error code is related to the oxygen sensors on the vehicle. There are typically two to four oxygen sensors on the four cylinder Toyota motor, so a more detailed diagnostic scan should indicate which one...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.