So I went to change my oil today and noticed a spark plug clamped into a hose right near my oil pan. The previous owner was obviously up to some crazy stuff.. Can someone please let me know what the hose is for? I’m complelty lost.
Gotta answer some of the questions so we can help a you. I suspect a possible blocked heater core and a bypass of some sort. I’ve seen some folks do it but typically they bypass it next to the firewall.