Leaking coolant, can't find it.

[ORCoaster]

I would put a floor jack on that point under the front door and raise it up.  Or drive onto some ramps and then just shimmy under the engine and look up at the back of it with a good light.  Even if there isn't a heater in there one of the three freeze plugs might be weeping coolant.

[air-cooled or diesel]

my thoughts too, take a look
But, never get underneath a car without jack stands or good ramps, stands are best, I had a problem with ramps bending parts as car went up them.

[bajacalal]

Read the 1st post. It's a Jeep Cherokee. The diesel one, that they sold in Europe.

You shouldn't need any kind of ramp or jack to crawl under a Jeep Cherokee.

5 euros says it's the heater control valve, water pump or radiator... I replaced three of them (and 3 water pumps and 3 radiators) during the 10 years I owned a Cherokee.

[ORCoaster]

Three very good reasons not to own a Jeep:

I replaced three of them (and 3 water pumps and 3 radiators) during the 10 years I owned a Cherokee.

But there was a day in time back before the seventh planet was discovered that I was the unfortunate owner/mechanic to a Jeep Commando.  What a freezer box on wheels.  The UP of Michigan knows no mercy for such a tin roof sundae.

I insulated it the next summer and put carpeting throughout. 

[AdrianD]

After so many months I still haven't found the leak but in my defense I did not have time to get it tested. After a longer drive there still is a strong coolant smell so its definitely leaking on the block somewhere.
There's a new addition to the garage, a 94 Miata which is tons of fun

[Turftech]

I typically pressurise the system with a tester then place a clean piece of cardboard under the motor and watch for any stains. It might also be burning the coolant if it is a partially blown head gasket.

[AdrianD]

Found the damn leak !!!

It was a hose which was very accessible, it never looked moist, never looked like it had a leak but at one point it started to swell up and then it developed a big hole. After changing it out the coolant leak stopped.

[ORCoaster]

This is how some people manage their problems.  Drive it until it breaks and then fix it.  Sometimes that costs more but sounds like you snuck by.  This time.