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> Can I use a Carter’s inline pump AND a fuel return line?, Or do I need a three port pump?
tornik550
post Jan 19 2019, 03:48 PM
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I recently changed to PMO carbs. I have the PMO fuel pressure regulator which calls for the use of the fuel return line. I previously had used a Carter inline pump and did not have the return line hooked up.

I am installing new metal fuel lines from tangerine. I figure that if I am replacing lines, I might as well replace the return line also (even if I don’t use it).

My question is- can I use the same carters inline pump and also use the fuel return line or do I have to get a fuel pump that has a return port? I have never used a fuel return line so I have a poor understanding of its function- I am not clear if any sort of pump pressure is needed to get the fuel to return?
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