It is important to check the oil sump screen for contaminants at least once per year. This was the first time this screen was checked, one year after a major overhaul. The connecting rods were scraping the crankshaft due to misaligned/wrong parts.
![[Credit: Wikimedia Commons]](https://www.kitplanes.com/wp-content/uploads/2026/07/4_rutan_a_longez.jpg_preview.jpg?w=218&h=150&crop=1 "Rutan Symposium Turns to the Coming Canard Maintenance Crisis")
![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/02/Fuel-Selector.jpg?w=218&h=150&crop=1 "Fuel Follies")
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Check the oil sump EVERY oil change just as one inspects the filter media.Unpleasant surprises don’t always show up in the oil filter.
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