Bonneville America Forums Forums Technical Forums General Tech Vacuum Hose... Where Does It Goes?

That should just be blocked off if the air injection system has been removed. It runs the pump that injects air into the exhaust port. If you have tubes going into the head next to your spark plugs that lead up under the gas tank and connect to a vacuum pot that vacuum line should also connect there to make it operate. Most remove the tubes by the plugs and put a block off plug in there then remove the vacuum pot under the gas tank and that vacuum line gets removed and blocked. There is also a larger tube that goes to the air box on that side.