Return-Path: Received: from spider.innercite.com ([158.222.1.5]) by truman.olsusa.com (Post.Office MTA v3.5.1 release 219 ID# 0-52269U2500L250S0V35) with ESMTP id com for ; Wed, 15 Sep 1999 12:07:01 -0400 Received: from innercite.com (plvpm3d-32-197.innercite.com [158.222.32.197]) by spider.innercite.com (8.9.1b+Sun/8.8.5) with ESMTP id JAA08151 for ; Wed, 15 Sep 1999 09:10:48 -0700 (PDT) Message-ID: <37DFC5DA.FCE7399A@innercite.com> Date: Wed, 15 Sep 1999 09:14:18 -0700 From: Steve & Claudette Colwell Reply-To: colwell@innercite.com Organization: Ms Colwell To: a Subject: Re:John Barrett's fuel tank leaks X-Mailing-List: lancair.list@olsusa.com Mime-Version: 1.0 <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> << Lancair Builders' Mail List >> <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>> >> After you do the Bubble Test with low air pressure in the tanks, heres how to find the pinholes that will leak with fuel but not air. Fuel has lower surface tension than air and will pass thru a void that air won't. Use about 10 gal of VM&P Naptha which can be purchased at Home Depot. This is a clear, single component, relatively volatile and HIGHLY FLAMABLE solvent that will not hurt anything that fuel will not attack. The advantage is it will pass thru voids just like fuel but will not leave residue that could prevent bonding of your favorite sealer. If (when) you find a leak, drain the VM&P, leave all the tank vents open and leave the wing in the sun for a couple of days to vaporize the VM&P that is in the void. It takes more time and a few more $$, but hay, this is to save some real grief down the road. Steve Colwell >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> LML website: http://www.olsusa.com/Users/Mkaye/maillist.html