Chevy 454 Air filter curiosity question.
Hello. Started to change the air filter on the new-2-me 1988 Winnebago with a chevy 454 (Probably the very first time this has been done). I took the dog house off and noticed some kind of thin tubing/wire(?) connected to the top of the air filter housing. It's above the wingnut that holds the cover on, sitting on top of the screw. I have not had time to follow it but it goes towards the front of the engine compartment. the reason for asking is that it appears to have rubbed a hole in the dog house cover which can be felt through the carpet.
Just curious and thanks if you know the answer...