yep, something missing .... the vent big_eek should be a small 'tube' in that hole with a cap on it that fits loosely, held on by a crimp - lets air out without letting road junk in

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature we find it attached to the rest of the world" John Muir
"When we tug a single thing on an old truck, we find it falls off" me
Some TF series details & TF heater pics & Rust-a-holics Unanimous parking lot