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Old 10-25-2016, 10:16 PM   #6
BruceK's Avatar
Join Date: Oct 2011
Posts: 10,048
Never seen a 20kw Onan so this may be entirely irrelevant. My Onan MDKD 6.5 fuel filter screw on thread faces upwards. It would screw on and not leak when run immediately after, but would leak badly later. After several filter replacements, and some tightening, it turned out the receiver fitting was the culprit, replaced it, no more problem. I suspect the damage came from an initial overtightening by a PO. With a similar arrangement, or even a side on fitting, you`d see fuel drip from the filter, but it`s not the filter body that`s leaking.
Island Gypsy 36 Europa "Doriana"
Sydney Australia
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