'78 CB750F
Been having fuel starvation issues so I pulled the carbs for a really good cleaning. While I was doing that I noticed something. There is a nipple next to the fuel intake linking the carbs with small fuel tubing, I have no idea what it's for (breather?). I didn't really think about it until I noticed that the tube going from the #3 to the #4 wasn't connected, I got a replacement #4 from here and didn't notice the nipple on the #4 isn't there and the line isn't connected to it. Take a look at the shots. It's a little hard to see because of the shadow, but the tube isn't connected to #4 at all with about a 1/4" gap. there is a hole where the nipple was supposed to be.
Shot 1- fuel intake and mystery line
Shot 2- Normal connection carbs 1-2/2-3
Shot 3- connection in question, no connection from 3 to 4
-What is the line for and does it add to my fuel starvation issue?
By the way, the carbs were pretty clean. What would slow fuel delivery from the tank to the carb? New petcock, removed the inline filter, re-cleaning the carbs now.
