![]() ![]() can oil in the radiator make the combine mixture froth up and boil up out of the overflow tube? I think this is what's happening.the leak seems to be coming from the filler neck area and not from a leak in the body of the re-cored radiator.I will double-check next time as I powerwashed everything to recheck and confirm leak-points next weekend. The unit is running well, but a little greyish smoke (not white and not black) steadily comes out of the exhaust.I was hoping that the smoke would go away after I broke the new engine in, but a little steady smoke still comes out. I also had to put 1 gallon of water in this weekend into the radiator as it is losing fluid somehow. I could have the oil tested for any water to be 100% sure, but don't think it would come back positive. no water in crankcase as I just changed oil after break-in and it was black. drain cock in bottom of radiator is draining good looking greenish fluid, so oil is only on top as it floats. Sooo.I am hoping (but would love other's opinions) that this might just be residual crankcase oil that flowed through the radiator during this mishap.Thoughts? It doesn't seem to be tons, but I am having a tricky time skimming it off. It seems that this stuff caused one of the liners to not seat completely flat.Mechanic torqued down the head (not knowing about the cylinder liner being ever so slightly out of whack).Went to start the unit and the radiator cap when flying off and a total mess ensued! Oil and coolant mixing as the water jacket became unsealed with crank a new liner, flushing, cleaning etc. More background.During the engine rebuild process the machine shop used some adhesive stuff to hold the cylinder liners in place. ![]() Went to do a fluids check and found oil (brownish oil) in top of radiator filler neck.I am talking to my mechanic who did rebuild. Really just breaking in the new engine. Everything is running very well.Good steady power. Less than 100 hours ago, I had a complete engine rebuild and installed a new injector pump and injectors. All, I am going to add to this thread as the symptoms are quite the same with my JD 350C crawler.Ī little background on my unit (yes, no crawler is cheap!): ![]()
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