A STUCK THERMOSTAT WILL DO THAT ESPECIALLY WHEN THE ENGINE STARTS 2 GET WARM-THEN ALOT OF WATER WILL BOIL OUT--------IF THE THERMO IS GOOD -U WILL C WATER MOVEMENT(FLOW) AFTER THE ENGINE WARMS UP.
It is possible that the antifreeze is coming from a bad water pump. Clean the engine off. Watch it to see where the antifreeze is leaking from, as it could be a hose instead of the pump.
u need to replace the heater core in your car
your heater core is leaking anitfreeze! heatercoreleaks antifreeze into the heater & ac vents causing a burnt spell & oily film on the front window.
If the heater has a sweet smell it could be that the heater core is leaking engine coolant. When the leak gets worse you will have a wet floor on the passenger side and the windshield will fog up when you turn on the defroster.
if it appears to be coming from where the cylinder head meets the engine block, it is the head gasket. if it appears near the intake manifold and head, it is the intake gasket (or intake AND exhaust gasket on a straight six or Chrysler slant six). if it is coming from the engine block it is a freeze plug. some v-6 and v-8 engines are common for springing coolant leaks at the intake gaskets.
The coolant is not flowing, causing no heat. Look at the antifreeze coming out to see it there are bubbles in it. If there are bubbles then you have a blown head gasket. If not, then you have either a bad thermostat of bad water pump.
It is possible that the antifreeze is coming from a bad water pump. Clean the engine off. Watch it to see where the antifreeze is leaking from, as it could be a hose instead of the pump.
heater core
there is no water mixed with the oil but have antifreeze coming out of the exhaust
Most likely the heater core is leaking. Has to be replaced.
You probably have a leaking heater core.
The smoke is actually antifreeze mixed with air. The most common cause of this is a leaky heater core.
look for antifreeze coming out of the radiator as the engine warms up after a cold start.
Once your vehicle is warmed up, if you have antifreeze coming out of the overflow you have too much in your radiator.
It is possible, but not likely. You have to pull the head to fix the gasket anyway. Check it for cracks before you reassemble.
If antifreeze is filtering through your ac vents, other toxins could also be coming through. Don't take chances; see a mechanic.
if you have the heat on in any vehicle, and there is only cold air coming out of the vents (providing the engine coolant temp gauge shows that the engine is warm) then there is no antifreeze flowing through the heater core, this may be caused by a couple of things: first, there might be a leak in the heater core, but usually antifreeze will be leaking into the heater core housing and will be visible, or there might not be enough antifreeze in the vehicles's radiator, or the water pump might be damaged and not circulating coolant. hope this helps and good luck!