Flushing coolant with a garden hose can be risky, as it may introduce contaminants and debris into the cooling system. Additionally, using high-pressure water can damage delicate components like the radiator or water pump. It's generally better to use a dedicated coolant flush product and follow manufacturer recommendations for the best results and to maintain the integrity of the system.
zerex super flush or if its really bad the super clean. zerex is made by valvoline
One Coolant Hose is hot and thew other is cold...
It sounds like you have a bad head gasket.
heater core is bad may need a coolant flush
only if the gasket under thermostat is leaking and may-be it's the hose clamp on the hose that is leaking
bad hose, radiator leak, leaking into engine.
be sure to not mix the different colours(red&Green) they Aren't compatiable with each other.if in doubt drain then flush system then completely renew the coolant.
it will leak.they dont usually get plugged up.if it does u may have poor heat.u can flush core with hose.
may have imbalance in coolant mixture, may have bad water pump, may have bad thermostat. check each.
May have a bad heater coil or a lose coolant hose clamp near fire wall.
There are a few possibilities 1) your resivoir tank is cracked and leaking 2) your sending unit is covered in gunk or corroded 3) your sending unit is defective and needs replacing 4) you are leaking coolant from somewhere (bad hose, bad gasket, bad joint, etc)Water is an acceptable quick fix, and tap water is fine (that is what you flush it out with). Once your problem is sufficiently solved, I would recommend a complete drain/flush/refill of your radiator with the proper mixture of coolant.AnswerWith the 5th generation Monte Carlos, when the overflow tank is emptied, and it kicks the sensor on, after you fill it up, the sensor may not reset or turn off and GM had problems with those sensors and they normally had to be replaced. It sounds like a bad coolant level sensor to me.
The two most likely causes are a bad water pump or a bad hose. daner@copper.net It's either your water pump or a bad hose. Try to locate where the fluid is coming out from. daner@copper.net