Have the 1995 H1, just has the heater/ac unit box rebuilt. I keep having a coolant leak running down behind the passenger foot board and the wheel well, running out the drain hole in the floor. Nothing from the unit box and of course it can't be seen from anywhere. All the hoses outside are not leaking along with the hoses running to the rear unit ase good as well. Any thoughts?

 

Still sounds like the heater core

 

Got the previous leak fixed. Core tested good. Replaced all hoses with new but I believe the leak may have been coming from the heater core inlet was out of round. Once we fixed that, that leak stopped.

It now seems to be leaking from the left side engine mount, that is where the drips form. I know that fluid will pool when bleeding the system bit it never ends. I can see from underneath it doesn't seem to be coming from the water pump, nothing wet from there. If there is any helpful information as to where I can go from here, please respond.

 

Couple of questions,

when you take the cap of the reservoir does air bubbles up from the hoses?

does it leak only when engine is on?
that said, not the after leaking.

 

No bubbles. The leak isn't one that pours out when running. It takes a while to accumulate from its source.

This was overnight with 10# pressure on the system. This will happen after running and letting it sit overnight as well.

 

ok, looks brown to me, most coolants are green.
Indication of that color if it was green but turns brown is a bad headgasket.
It allows oil or exhaustair being mixed up and causing the leak at the head unit on the block.

 

The antifreeze that I put in is orange.

 

Did you do a pressure test?

 

Yes I did. Put it to 11-12# for 3 days. Pressure held, no significant loss according to the gauge. This is what is baffling relating to the small amount of leakage.