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I think I found it. It looks like the small hose that goes into the block. That doesn’t look fun at all I’ll post back with an update. I need to order some parts
ordering heater hose now....
This is what happened to mine. Ordered a new one but haven’t bothered to replace it after giving the existing one a fresh end.Big hose toward back of block is PHH. Smaller hose in block in front of it is to the throttle body. If the end is just cracked on the throttle body hose, pull it off the block, cut an inch off and push it back on with a new clamp.
This.Replace your heater valve while you're at it if you're doing the PHH.