Here are pictures of a fuel line hose at the back of one of my IO-470 engines that was laying in there for 9 years since the overhauled engine was installed. In the process of dealing with an exhaust bracket stud on the base of the intake tubes, we decided to change out all the stiff hoses. Near Hose Fail (Why Thorough Annuals are Very Worthwhile!) Wouldn't you just like to SCREAM at the knucklehead that left this fuel line laying on the sharp edge of sheet metal when they installed this owner's tip tanks? Note the black corrosion and pitting of the line.Ī soap test of the removed line reveals the porosity of the wall. Here is the line as seen with the naked eye. Fuel lines seem to be more likely, maybe due to all the different compounds and the normal water entrapment.' Every flaw has had years to become more than just a little scratch. 'This is more and more commonplace in fluid carrying lines.
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