Finishing up the wing in my 9A QB. Finally got around to sealing the end plate on my fuel tank. Pressure testing with a manometer to 27" (1 PSI) as recommended by Vans shows a VERY slow leak. The level actually remained stable for 12 hours and then dropped about 3" overnight. Have gone thru the usual soapy solution spray MANY times and can find no bubbles at the end plate, the screws, etc. Gas cap is tightly sealed with fuellube and duct tape. Have sprayed all the rivets in the skin top and bottom and see no bubbles.
Would prefer to avoid removing the tank since it would be a major pain to get to the bolts of the Z brackets.
Would appreciate thoughts of any who have had similar experience.
Peter K
9A QB
Would prefer to avoid removing the tank since it would be a major pain to get to the bolts of the Z brackets.
Would appreciate thoughts of any who have had similar experience.
Peter K
9A QB