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Old 05-14-2019, 03:58 PM   #1 (permalink)
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There is a very small poly hose coming from under my gas tank and down to atmosphere in side my right side panel on my 99 Road King thats leaking oil.. Where does that come from..?

Last edited by Weldercliff; 05-14-2019 at 04:03 PM.
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Old 05-15-2019, 03:12 AM   #2 (permalink)
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Armin wants to know Dino or Syn?
Crankcase ventilation or breather vent.

Nothing can ruin a Man's Day faster than an almost Takeoff!

Heads ported and revalved to 95 CI BB by Technomotion, NL.
51mm HPI throttle body with Doherty Pacc AC
Wood TW9BG cams compression 10.8:1 @ 197 ccp.
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Old 05-15-2019, 07:44 AM   #3 (permalink)
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FXDRYDR is still riding a stock bike FXDRYDR is still riding a stock bike
That's what it sounds like. Pull the tank and see if the other end is tapped into the valve covers. If so, someone at some time re-plumbed to vent the oil blow-by to the atmosphere as opposed to the intake. IMO a very good idea and nothing to worry about.
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