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Old 01-18-2019, 12:43 AM   #10
Mike Peters
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Join Date: Aug 2012
Location: South East Wisconsin
Posts: 1,279
Default Re: Engine Water Jacket Cleaning

If you run an engine with chunks of rust in the water jacket, Those rust chunks will be pumped through the upper water outlet and into the top of the radiator, where they will lodge and plug up your radiator. So before you install your radiator, be sure to back flush the radiator in the upside down position to get rid of any rust accumulation that may be on top of the core.
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