2005 Kia Spectra, losing coolant but no leaks, overheats
car has 138,000 miles. overheated 2 weeks ago, losing coolant, replaced radiator cap after no leaks found. still losing coolant (about 1 qt a day) and temp will fluctuate up and down while driving, but not to the red line. no water in oil and no steam from exhaust.
Check your oil, sounds like you blew a head gasket..
Check you transmission fluid as well..
no signs of water in oil, no steam in exhaust. transmission fluid is good. car runs same as always, no loss of power or noises.
Get the cooling system pressure tested. My guess is that the coolant is going out the tailpipe through a bad head gasket or cracked cylinder head. Coolant will not always be found in the engine oil when there is a bad head gasket or cracked head involved. Coolant going out the exhaust in fairly small quantities will not cause any driveability problems.
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