Problem:Replaced both fuel tanks.Replaced in line vent valve on right wing due to breaking spring on removal.Test flight revealed uneven fuel in tanks after one hour flight.Vacuum in right tank on removal of fuel cap.Relaced both fuel caps and as before one can blow thru both underwing fuel vents.Transposed vent valves ie left to right and right to left.Problem is now transferred to left side.That is a vacuum in left tank.Both vents relieve when blowing thru from outside.Why when we replace two new correct part numbered fuel caps do they appear not to vent?
2.Will replacing other part worn vent valve sort the problem out?????
A very expensive excercisea that MUST be corrected.Thanks guys.Ron.
2.Will replacing other part worn vent valve sort the problem out?????
A very expensive excercisea that MUST be corrected.Thanks guys.Ron.