Q: Engine coolant disappeared
My engine coolant is disappearing from the reservoir in my vehicle. The engine has not overheated yet and I cannot see any visible leaks. Any ideas as to what could be causing the issue?
My car has 220000 miles.
My car has a manual transmission.
The engine could have an internal coolant leak and the coolant is being consumed into the motor. This is is you do not see any leaks anywhere on the round or on the engine. I would recommend having a mechanic like one from YourMechanic do a cooling system pressure test and combustion chamber pressure test to see if the engine is leaking internal at one of the head gaskets or intake gaskets.
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・Fair and transparent pricing
What others are asking
How to adjust the volume on the radio?
When listening to the radio, you may find the need to turn the volume up or down. There is a Volume knob built into the radio to help you adjust the volume at any time. To adjust the volume. Turn...
How do I turn off an activated security alarm?
If the security alarm accidentally turns on, you can easily turn it off. Simply unlock the door with the key, key fob, or Intelligent Key, or press the request switch. This will only work if the ignition is turned off....
Car shuts off when stopped or going slow
There are many reasons why a vehicle may stall at a stop or at low RPM. I would recommend having your vehicle's stalling issue inspected (https://www.yourmechanic.com/services/car-is-stalling-inspection) at by a knowledgable technician, such as one from YourMechanic, to determine the exact...
Air conditioning leaking
I would first recommend having the air conditioning system inspected (https://www.yourmechanic.com/services/heating-ac-inspection) to determine where the leak source is located. Once the leak source is found, have it repaired and have the system recharged. Depending on the type of system you...
Head gasket blown
Hi there. Common signs of a blown head gasket are: overheating, thick white smoke from the tail pipe, milky liquid in the oil cap or radiator cap, or loss of coolant. If you need assistance with an inspection or replacement...
Engine hesitation and blue smoke
The blue smoke coming out of the exhaust is an indication that the motor is burning excessive oil. The Mazda 3 engines are known for this. When the valve seals become worn this can cause oil to seep into the...
Question about thermostat replacement and radiator cooling fan switch replacement
Hi there. Anytime the coolant system is worked on, a professional mechanic should verify the service steps with the manufacturer's service guide. This will help them determine the right steps to complete the coolant bleeding (https://www.yourmechanic.com/services/cooling-system-flush) - if it's mandated...
My car drives forward when it's in reverse - is this the transmission?
The linkage between the shifter and the transmission range selector may be binding or broken and not allowing a full range of movement at the transmission. The linkage connects to the transmission under the vehicle so it must be lifted...
Check Engine Light is on - codes P0016 and P0017
Hi there. These codes (https://www.yourmechanic.com/article/p0016-obd-ii-trouble-code-camshaft-position-a-camshaft-position-correlation-bank-1-by-jay-safford) lead me to believe that the cam/crank timing is out. However, there are possible underlying problems that can set the same codes and give you the symptoms you're describing. You could have a wiring/connector issue...
Related articles
The Best Used Cars to Buy If You Just Had a Baby
Having Having a baby will completely change your life. Your activities and hobbies will change. Your sleeping patterns will change. Chances are good that you’ll also be looking for a change in vehicles. You need to ensure that your car...
Symptoms of a Bad or Failing Cooling Fan Resistor
Common signs include the engine overheating, cooling fan only working at certain speeds, and the fan never turning off.
Signs Your AC Needs to Be Recharged
If you feel the AC is not cooling as much as usual, cannot hear the AC clutch engaging, and see refrigerant leaks, you may have to recharge your AC.
Browse other content
Maintenance
Services