I've been trying to track down a leak for a few weeks now and I think I've found it.
I noticed a split in the short "u shaped" 1/4 inch hose on the drivers side of the throttlebody. I've been trying to find out the purpose of this hose but without success.
Anyone had this problem or know what purpose this hose has? I assumed it was a vacuum hose until I saw coolant dripping from the split.
Hopefully replacing it solves my coolant loss issues.
Oh btw it's a VY2 SS ute.
pretty sure the hose you are talking about is the pcv hose. im pretty sure coolant flows through the throttle body so there might be a leak somewhere