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Old 09-22-2019, 01:16 AM   #3
Alaska Jim
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Join Date: May 2010
Location: Palmer, Alaska
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Default Re: What's the hiss, hiss, history of this

What 40cpe said. It looks just like the one on my stock '51Merc. double action fuel pump, used to help the wipers from completely stopping when the accelerator is pushed down when accelerating or going up a hill.
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