Quote:
Originally Posted by funola
If neither one lowers the temps, maybe the citrus flush loosened enough crap to cause a blockage somewhere?
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The purpose of a citric acid flush is to remove the thin layer of scale which acts as an insulator so the coolant can now contact the engine block allowing it to properly cool it. Since he performed a hose water flush, degreaser flush and a citrus acid flush I can't believe there is still a blockage. IMO the new thermostat is the probable cause for the high temp reading. Also +1 to using an IR heat gun.