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Old November 7th, 2018, 04:18 PM
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glc glc is offline

Join Date: Jul 2012
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If the radiator itself has a pressure cap, the cap on the overflow needs to be a vented type.

Test your cap to make sure it relieves pressure within specs.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS