Rad Blew, Engine overheated, possible bearings blown... Related?

mardi 30 décembre 2014

So I took my XJ in for a rad flush, and turns out the shop flushed the coolant, didn't drain the water/flush out.



Fast forward to a few weeks ago, I'm driving and it's about 5degrees farenheit (-15C) out, and driving about 5 miles (usually it's warm by then) wondering why the air is barely warm. before my rad blows and sprays my windshield. Thinking it's snow off the grill, I continue on for a few min, as the block starts making a LOUD knocking/tapping sound and the engine shuts off, only to start once for a few seconds then turn off.



Took it to a different shop, he started it and said there's a very loud noise, possible rod failure, and suggested take it back to the place that botched the flush.



They drained it, and say it's likely a bearing on the connecting rod where it connects to the crank (took off belt and turned it on and said that's how they found out). Also claim that it's probably unrelated and it was fluke that it happened when the rad blew, as the bottom end "has nothing to do with overheating".



So the question... Or questions... Anybody have anything like this happen before? Causes? And if it's related to the overheating or could it actually be a fluke and something else?




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