[Beesme]

Tried calling 
I had a 8v that would loose prime every time we changed filters
Try taking the return line loose at fuel tank
Pump fuel back into fuel tank Through filters
That should correct problem (if it’s not the pump)

Thanks George . We are still at rest area . I will see if I can find return line at tank . I’m sorry I missed your call .... I was on phone with good Sam almost all day