So my 1988 CRX Si D16ZC is losing coolant. Not terribly fast (reservior tank will lose about half the coolant in it over maybe 2 weeks). There isn't any leaks (that I can see/feel) on or around the engine and radiator, nor does it drip anything.

It does have a reasonable amount of white smoke on cold mornings, but this normally goes away once the air warms up. It also does drip water from the exhaust quite a bit, but it doesn't smell like antifreeze; just like normal water.

I have opened the radiator cap and ran the engine to check for bubbles, however I'm not sure really what to make of it, as there is the odd tiny bubble (like half a millimetre) every few seconds coming up.

There is no cross contamination between oil and coolant at all.

If anyone can shed any light on the probable cause or if they have a similar situation or anything; would be greatly appreciated.

 

Head gasket...

 

Change your oil and see if any coolant is in it and check under your oil cap if ths all white and goooy i agree its a head gasket or cracked head/block

 

Yeah I already have checked the oil and coolant and done a flush of both. They are both as coolanty and oily as when they went in; no contamination.

 

easy way to test your head gasket, attach a funnel to your radiator, and a compressed air hose with a regulator to the gauge end of a compression tester. take out the shrader valve, then crank the air hose up to about 20 psi and set each cylinder at tdc. if bubbles start comming out of the funnel then your hg is going bye bye.

i saw this method used on an acura legend to test the hg since they love to eat them