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87 gl wagon awd auto carb

I found a rusted/clogged fitting below my thermostat housing on my intake as I'm trying to clean it and replace all hoses. I didn't label it so I think it was previously disconnected.

Can anyone recognize this (the rusted end off the bottom of the housing in the pic) and let me know where it should connect?

Many thanks!

Sorry got overwhelmed with hoses .. Figured it out, goes to the top of the engine! Duh!

Well done, yes it is a bit of a plumbers nightmare under the hood with all the hoses and pipes.
Keep at it you will get there
Hylton:twisted:

Thanks Hylton! Cleaned things up a bit but couldn't finish today. Found that rusted line to the engine was actually blocked! As was the small 5/32nds line from the metal pipe in back of the carb to the front! Cleaned them both out and rePlaced to vacuum hose, but will try to find small heater hose tomorrow and do it right and clean the intake and connect everything!