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Old 09-25-2017, 08:28 PM
1986 Newport 1986 Newport is offline
Junior Member
Join Date: Feb 2016
Posts: 7
Default Still hunting

So my primary tank (20 gallon plastic) has no antisiphon mechanism but my aux tank does. Pulled the siphon tube from main tank to be sure no cracks or lose tube. Because they both had this issue im still hunting. Anyway something on the presure side is able to do this? Niether tank has a vent but I tried main tank without cap on and that did not work.

How do I test the pump? Can I tee in a pressure gage? What pressure should I look for? I'm thinking my pump vaccum port ( engine side) might be restricted.

I have new quick disconnects on the fuel lines, any issues with male parts on engine cowl?
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