There is usually a noticeable aroma of anti-freeze coming from the exhaust, or bubbling in the radiator with the engine running. Also, there is sometimes oil in the radiator or anti-freeze in the oil. A compression test usually tells the story.
look at your engine oil you may have a leaking head gasket
water in oil The smell of anti-freeze at the tail pipe (sweet, sickly smell)
A dye test will tell you if your head is damaged in the event of a blown head gasket. It turns colors anywhere it is leaking on the head, hence where any cracks would be.
I doubt the cylinder wall would be leaking coolant. More likely the head gasket is bad or the head is cracked. When the engine is warmed up and running, a white sweet smelling smoke will come out of the exhaust. The white smoke is a tell-tale sign of an internal coolant leak.
it could be a head gasket leaking, and running down the back of the motor. A compression test is the only way to be able to tell.
Put water in it and if it leaks ..... its leaking. A DUUUUUHHHHHHHHH!
sounds like the head is cracked.
Coolant leaking from back? meaning exaust? If yes, then it's a head gasket or cracked head. Will not start because 2 or more sparkplugs are now wet with coolant.
No. You have either a leaking heater core, or a leak at the windshield.
You'll see either fluid or grease leaking out of it.
You need a head gasket.
Thermostat, blocked radiator, leaking hoses, rusted impellers on the water pump and the worst possibility, a leaking head gasket/cracked head.