An incorrectly fitted radiator cap can allow coolant to escape the system.
You first pour coolant in your car
Having a leak in a radiator hose will have no effect on the engine running or not. However, in time the hose leak will cause the level of the coolant in the radiator to drop below a critical level and the engine will overheat.
If you mean engine coolant is getting into the car, the heater core is leaking coolant causing the coolant level to drop and that causes the engine to over heat.
Fill the radiator to the top with coolant. Start the car and keep checking the coolant level. The coolant level will drop when the thermostat opens up, so refill it.
a leak or burning it
Fill the vehicle with coolant and leave the filler cap off. Start the vehicle and keep adding fluid as the coolant level drops. When the motor is warm enough for the thermostat to open up you will see the coolant level drop quickly. Put in more coolant until it is full then shut off the motor and put the filler cap back on.
If there is not bleed valve for the coolant you will have to do it manually. Fill the radiator up and start the car. After it warms up the coolant level will drop, refill it.
Low coolant level which causes an air pocket in the engine.
No, the two are not related
A sudden drop in water level in a toilet bowl could be caused by a clog in the drain pipe, a malfunctioning flapper valve, or a problem with the water supply line.
Leaky transmission lines would cause the fluid level to drop and eventually cause the transmission not to shift and go.
Overheating problems are really fairly simple, but can be difficult to troubleshoot. Either coolant is not being circulated (properly or efficiently) or/and coolant is not being cooled via the radiator and fan. Low coolant level will cause overheating. Improper coolant to water mix can cause overheating too. It should be a 50/50 ratio. Check the coolant level and mixture. Look for collapsed radiator hoses. this will impede coolant flow Check the water pump by grasping the pulley and wiggling it up and down and/or back and forth. If you feel any play, it means that the pump has died, or will soon. Replace the pump. Check to see if the fan is coming on now and then. IF not, the temp. sensor is dead or the fan is dead. Replace as needed. These are all basic things to check. For what it's worth, the very best way to fix overheating problems is to drop the car off with your mechanic ;) FriPilot