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ac170 gas
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kyman View Drop Down
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Joined: 29 Aug 2024
Location: kentucky
Points: 7 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kyman Quote  Post ReplyReply Direct Link To This Post Topic: ac170 gas
    Posted: 29 Aug 2024 at 3:40pm
when my 170 is shut down the oil drains out of oil filter back to crankcase, when starting it takes 15 or 20 seconds for oil pressure to come up. book says there is a check valve in filter base but there is not.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20534 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 29 Aug 2024 at 3:59pm
Sounds as normal as thousands of others out there. There is a rubber flap inside the oil filter (check valve) to keep dirt/debris from running back down into the oil pump when the engine is shut off. Over hrs of sitting, all the oil drains into the engine but on the clean/pressure side.
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kyman View Drop Down
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Joined: 29 Aug 2024
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Points: 7 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kyman Quote  Post ReplyReply Direct Link To This Post Posted: 29 Aug 2024 at 6:09pm
thanks
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