Gem_Setter Posted September 21, 2013 Share #1 Posted September 21, 2013 (edited) While replacing my intake boots I noticed two "T"s at the top of the carbs. Should there be a hose in between these connecting the left two to the right two? I believe it is Item 45 that connects to 42 on the parts diagram. The list shows I need 2 but I cannot tell where they connect to. 99 RSV Thanks in adavance Allen Edited September 21, 2013 by Gem_Setter Link to comment Share on other sites More sharing options...
Gem_Setter Posted September 22, 2013 Author Share #2 Posted September 22, 2013 Thanks for looking it appears they are vent tubes. Link to comment Share on other sites More sharing options...
Condor Posted September 22, 2013 Share #3 Posted September 22, 2013 I wasn't sure what their function was, but FYI the hoses that come off the T are 1/4IDx3/8ODx25" I kinda thought they were overflows?? Link to comment Share on other sites More sharing options...
Gem_Setter Posted September 22, 2013 Author Share #4 Posted September 22, 2013 Yamaha parts diagram does not say much but the service manual shows them as a vent tube. I think the tubes are there just not hooked up. Looks like they run down behind the lower fairing. Does not seem right to vent a carb with out the air being filtered but I guess. Link to comment Share on other sites More sharing options...
GeorgeS Posted September 23, 2013 Share #5 Posted September 23, 2013 IF, the Float Valve, sticks, in open position, and the bowls flood, the fuel will run out these Overflow hoses, I had this happen once, lots of fuel running down under the bike. thats why the hoses are supposed to run down behind the engine !! Link to comment Share on other sites More sharing options...
crowrod Posted September 23, 2013 Share #6 Posted September 23, 2013 I think those hoses go to the air filter box openings, right at the D slot there is a a loop for them to go in. kinda like a vacuum for vapors. Link to comment Share on other sites More sharing options...
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