So, I've done plenty of work on my '93 FZJ80, including but not limited to rebuilding the head/HG, replacing the PHH, rebuilding the front axle x2, rebuilding the rear axle, and plenty of other things. Earlier this year I went to help shovel snow at my church, and on my way home my cruiser overheated and shut itself off. There was no hint of coolant burning in the exhaust, but it had blown out pretty much every drop of coolant, but I could not see where it all went. I towed it the remaining .5 miles home, and finally started working on it last week (working from home, don't have to drive it). I replaced the thermostat and water pump, and then started to fill it up with more coolant. As I got to about 3/4 gallon in the system (filled through the radiator), there was a leak but I still couldn't see exactly where. I replaced the radiator when I did the HG, and I can see it's still in really good condition. I can see all of the front and rear of the radiator and the leak either isn't coming from the engine radiator, or it's coming from somewhere I can't see.
My suspicion is that the thinner, black radiator just in front of the main radiator has a leak, but I can't see into there. I have the FSM, but for the life of me I can't figure out whether that is the transmission cooler or something else, so I am not sure what I'm going to need to do to gain access and see where the leak is.
As far as I can tell, the leak is down low, not coming from any hoses or fittings, and is on the driver-side. Any thoughts on where it could be coming from or what I'm going to have to do to see it directly?
My suspicion is that the thinner, black radiator just in front of the main radiator has a leak, but I can't see into there. I have the FSM, but for the life of me I can't figure out whether that is the transmission cooler or something else, so I am not sure what I'm going to need to do to gain access and see where the leak is.
As far as I can tell, the leak is down low, not coming from any hoses or fittings, and is on the driver-side. Any thoughts on where it could be coming from or what I'm going to have to do to see it directly?