Odd coolant leak

[little_joe]

@Poser @skully3 you guys nailed it, and I feel a fool for missing something so obvious. Replaced that bypass hose today, topped it up, burped it, all good to go so far. There were no leaks while or after driving for about 20 minutes.

 

[Poser]

Glad you got it figured out.




Something similar was occurring on a customer truck a few years back and it ended up being a very small pinhole in the top tank of the radiator that would intermittently get plugged by debris internally at random times and not leak/system would pressurize and function normal, and then it would leave this very small trace of coolant on the air cleaner cover.

Would pressurize system with a hand pump and it would hold and not leak.

Took a bit of time to sort that out...

 

[thebigredrocker]

“No need for dye, solve your mysteries with Poser’s eye”