Agpopp Posted May 14, 2023 Share Posted May 14, 2023 Any idea what this is on my Neptune? Upper drain for something. Can't tell if it's water or coolant that comes out. Haven't dug too deep but seems too high up for anything coolant. Link to comment Share on other sites More sharing options...
Trinidaddave Posted May 14, 2023 Share Posted May 14, 2023 This is the drain for your roof air conditioner. Link to comment Share on other sites More sharing options...
Agpopp Posted May 14, 2023 Author Share Posted May 14, 2023 1 hour ago, Trinidaddave said: This is the drain for your roof air conditioner. After really getting deep in there....it looks like a fuel bleed?? Definitely connected to engine tubing. Link to comment Share on other sites More sharing options...
BradHend Posted May 14, 2023 Share Posted May 14, 2023 (edited) My Cayman has same setup. It’s for your cooling system. It comes in quite handy when draining and filling the cooling system. Allows air in to help drain, while also allowing air out when filling. Edited May 14, 2023 by BradHend 1 1 Link to comment Share on other sites More sharing options...
Agpopp Posted May 14, 2023 Author Share Posted May 14, 2023 5 hours ago, BradHend said: My Cayman has same setup. It’s for your cooling system. It comes in quite handy when draining and filling the cooling system. Allows air in to help drain, while also allowing air out when filling. Thanks, I figured it out once I looked again. That means I have more hoses to change! Link to comment Share on other sites More sharing options...
bhawk44@bellsouth.net Posted May 15, 2023 Share Posted May 15, 2023 This is the Air Filter Restriction Indicator. Link to comment Share on other sites More sharing options...
BradHend Posted May 15, 2023 Share Posted May 15, 2023 @bhawk44@bellsouth.net Just to the left of the restriction indicator in the OPs photo there is a small petcock valve. Link to comment Share on other sites More sharing options...
Guest Ray Davis Posted May 15, 2023 Share Posted May 15, 2023 2 hours ago, BradHend said: @bhawk44@bellsouth.net Just to the left of the restriction indicator in the OPs photo there is a small petcock valve. Are you talking about this thing? Link to comment Share on other sites More sharing options...
Agpopp Posted May 15, 2023 Author Share Posted May 15, 2023 8 minutes ago, Ray Davis said: Are you talking about this thing? Yes that's the petcock I was referring to. It is for the cooling...its an air bleed and I'd connected to the bypass circuits. It's fed by 3/8" heater hose with Parker style barb fittings. All of these are pressure and adds to the bill when a complete hose job is in process. Link to comment Share on other sites More sharing options...
Guest Ray Davis Posted May 16, 2023 Share Posted May 16, 2023 4 hours ago, Agpopp said: Yes that's the petcock I was referring to. It is for the cooling...its an air bleed and I'd connected to the bypass circuits. It's fed by 3/8" heater hose with Parker style barb fittings. All of these are pressure and adds to the bill when a complete hose job is in process. Thanks Andrew, I don't believe I have seen one like that before. Link to comment Share on other sites More sharing options...
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