I have 81 buick regal (olds 307 5a /th350c)
2006-09-26 09:50:13 · 7 answers · asked by David S 1 in Cars & Transportation ➔ Maintenance & Repairs
That tube preheats air that is entering the engine. The tube should be connected to a shroud on the manifold allowing fresh air to warm up and be drawn through the air cleaner. I believe it is called the "intake preheater tube"
2006-09-26 09:52:33 · answer #1 · answered by ©2009 7 · 2⤊ 1⤋
It's an exhaust recirculation tube.Any exhaust gases that weren't burned up and is still in your engine goes back up to the air cleaner to go through the carb or throttle body to go through the burn process again.
2006-09-30 16:28:04 · answer #2 · answered by whtsthislif4 5 · 1⤊ 0⤋
thats a heat exchange to supply heated air (from around the exhaust manifold) to the air cleaner. It helps combustion in cold weather operation.
2006-09-26 17:01:00 · answer #3 · answered by PAULTER 1 · 1⤊ 1⤋
Heat Riser.
2006-09-27 03:51:31 · answer #4 · answered by Powder 2 · 0⤊ 0⤋
that is called a heat riser the function is to warm incoming air during cold out side temptress for better fuel mixture and combustion.
2006-09-26 16:59:10 · answer #5 · answered by Anonymous · 1⤊ 1⤋
no its called an AIR system it pumps air into the throttle body to help reduce emmissions
2006-09-26 17:03:48 · answer #6 · answered by Steve R 2 · 0⤊ 1⤋
air filter maybe or carborator maybe he he
2006-09-26 16:53:56 · answer #7 · answered by an angels butterfly 1 · 0⤊ 2⤋