I ran the trekker for a while this weekend, really the first time Ive had it out since I replaced all of the heater and cooling system hoses. Ive got one tiny drip under the thermostat / intake housing, the coolant hangs on a bolt head then drips off, I cant for the life of me see where its coming from, though it looks like I may have missed a hose, are the large hoses under the intake / carb coolant or smog hoses?? Does the plate on the bottom of the thermostat housing have a gasket that could be leaking?? I can try to get a picture of the area and where its dripping to see if someone can help me track it down, the truck is running better than ever though! ~Matt

 

I think we're both chasing the same demon right now, I'm going to drain some out of my radiator again this weekend, damn coolant aint cheap, and take my t-stat housing back off and sand it down. You can tell if it's the t-stat housing by looking at the gasket....if it looks like its sweating or just wet, that's your demon. This is my third attempt at getting it to quit. after this it's either hi-temp silicone or stop leak.

 

Im almost 100% sure its not from putting the new thermostat in, its totally dry around there, its showing up underneath, I get drips that are coming from somwhere, its a very small slow leak... I used a paint filter from Home Depot to strain my antifreeze back in, they were a buck a pack and did the trick

 

There is a coolant hose under the intake that is difficult to see. It attaches to a fitting on the bottom of the intake. The hose could be leaking, or it could be the fitting itself.

 

Did you find your leak yet? Had the same issue with my intake. Yes there is a very thin gasket between that bottom plate. I saw a drip from the same place that you have and as I was looking around I found that gasket to be swelled and wet all around. I had an extra manifold so I ended up just swapping everything over onto the other and problem solved.