I'm wondering if anyone knows if there even is an In or an Out on the throttle body for the two coolant lines that run to it? They're are two nipples next to each other on the TB (both for coolant lines) and I'm not sure if there's a one-way valve? I assume any line can enter from either nipple and exit through the other?

Thanks

 

Here is a pic of a civic IM with the coolant lines for the TB. I colored them red and circled the nipples, not sure if this is what you need.


hopefully pic shows up, first time posting

 

yeah, should be

IN - right
OUT - left