Yes, there could always be a leak in coolant tubes. Most tubes are made from rubber and rubber + old age = cracks and stretching
Mine is making a similar noise. Steam is passing through the coolant overflow tube as soon as the motor is shut off. The tube is connected to a nipple just under the radiator cap and the tube travels to the bottom of the coolant reservoir. The coolant in the reservoir then bubbles
tahmid
The heater core is located in the same place.If you have coolant coming from the tube,your heater core is bad and needs to be replaced.
There is a metal tube that runs under the intake manifold. It goes from the back of the water pump to the rear of the engine where it changes to a rubber heater hose. That metal tube is known to rust out and leak coolant. The intake manifold must be removed to gain access to the tube for replacement.
Coolant overflowing from a 2003 Cavalier overflow tube usually indicates a blown head gasket. Check the cylinders for proper compression to confirm a blown gasket.
In front of the intake manifold on the coolant tube
It probably has a leak. Here's something to check - the radiator has a tube coming out to the reservoir, so when it gets hot and expands the coolant goes into the reservoir and should go back into the radiator when it cools, but if your reservoir has a crack and the coolant leaks out, well it's gone and can't go back into the radiator - this would cause a lot of loss of coolant.
The purpose of the overflow tube in a car's radiator system is to allow excess coolant to flow out of the radiator when the engine is hot and the coolant expands, preventing pressure buildup and potential damage to the radiator or engine.
"crossover tube"... (??)If this is referring to the coolant bypass hose/tube, we've got you covered with the "Related Question" below.If not, please elaborate on what/where/symptoms are related...
Under the coolant reservoir near the battery.
The coolant sensor moniters the coolant temperature. A faulty thermostat could cause the engine to run cool.
If the coolant reservoir can not maintain the proper level of coolant, it is possible the engine could over heat when the level drops.