Hi I have a YAMAHA XS1100 THE FUEL IS FLOWING OUT THE MAIN AIR JET AND NOT FILLING THE BOWL WHAT COULD BE THE CAUSE?

Sounds like a float level may have been altered redicing the amount of fuel flowing into the carbs, this may not have been intentonaly addusted, undo the drain screw at the bottom of each carb with the fuel tap turned off and catch the fuel from each bowl as you drain them, this will give you an idea which carb if any is at fault, it may be the float needle sticking, blocked pilot, or main jet, if you think of it like the choke is a separate jet, when you turn of the choke the fuel is restricted, the only other likely fault could be a blocked jet , or as i have described above, also check the throttle slides are opening as you run the bike with the air box rubbers removed you may have a split diapram,

The fuel line connects to the fuel inlets towards the float bowl in the carb.Test the fuel lines to confirm the float valve seats are sealing.There are two Ts between the each set of two carbs, the lower is where fuel goes in, the upper is a vent.-------- Click this link below for more details with diagram:--- http://technoanswers.blogspot.com/2011/07/fuel-lines-routing-on-yamaha-xs1100.html ---------- This will help.Thanks.Helpmech.

two stoke I guees, eletronic choke if so then it is stuck, if not then if slide then slide stuck up a hair...carbs systems use Idle jet and main jet, the main jet is a taper jet with a tapper needle that adjust gas flow as the needle move up air flow across it draws more gas through the hole going to the float bowl but the idle jet is a fixed hole that has a air mixture screw nthat lets you trim the fuel air ratio for idle make sure the srew did not fall out, next a stuck float bowl can flood the idle with too much gas next the chock if half on can cause a high rich gas and cause huigh idle next a sticky throttle cable can cause high idle and just unhook throttle cable to check this the last thing is a points not electrong ignition system bike can cause high idle...air leake into the carb just like a vacum leak in a car can cause high idle...l.start with diss connecting trootle cable then check for needle jet seating then check for choke not stuck last is the float bowl level you get it study how a carb works and you nail this thats how I learned after 115 motorcycles I had seen alot of my own errors....rememeber high idle most likly is to much gas...now how is it getting to much gas is the question most likley