Losing coolant ?

JBEGGS14

New Member
I have been having this ongoing problem in my 1999 integra gs, auto for some time & can't figure out what is wrong. My coolant keeps going into the reserve tank but does not go back into radiator. So far the thermostat, upper, lower radiator hoses, reserve tank cap( it was cracked), radiator cap last year & radiator was changed at 150,000 miles ( it now has 193,000 miles & car has been maintained - oil changed every 3,000 - 3,500 miles since day 1)a couple of times the gauge started to go over 1/2 way point - in stop & go traffic with ac on but car has not overheated. I am constantly putting coolant in it with fan off, heater on full, engine running & bubbles do come out until fans kick on. The car runs good still. There is no white smoke, can't find a coolant leak - so where is coolant going?
 
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