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Discussion Starter · #1 ·
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.. :eek: Can someone please let me know what the hose is for? I’m complelty lost. Auto part
 

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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.
 
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