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A guy at the hangar in Mobile told me to never trust a new fuel cap seal without a leak check
He said he saw a plane lose a quart an hour from a bad seal that looked fine. I swapped one on a Piper last week and almost skipped the check. Sure enough, it seeped when I pressurized the tank. Had to pull it and use the old sealant trick. Anyone else run into new parts that just don't seal right?
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jade2266mo ago
That reminds me of a bad batch of O-rings we got once.
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taraj116mo ago
Check the lot number and supplier.
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