99 cougar coolant problem

i have a problem with my coolant a few times a month when my car sits overnight my car seems to build up coolant and blow it out of the exaust for maybe a min or so and then it is fine anyone else have this problem i have a 99 cougar with a 2.0 any help would be great

How much coolant are you losing? If it is really coolant coming out of your tailpipe and not water (water is normal, it is a byproduct of the catalytic converter), then you probably have a blown headgasket. What does the oil look like? Chocolate milk? Is your car overheating? Pressure test the cooling system and do a compression check on the motor.

did a compression test on the motor everything seems fine oil and coolant are not mixed in the motor or the resivoir but you can smell its coolant when it smokes

Explain blowing it out the exhaust? Is it smoke coming out? Is it just vapor coming out? Is it actually liquid dripping out of the exhaust? Is your coolant level actually dropping?

Need more details.

just had my v6 fixed last week for that. i was losing a little coolant and i could smell it. pressure tested fine. then i saw the coolant boiling in the overflow tank. the radiator was clogged. car has been running like a champ since then.