Join Date: Feb 2004
Location: New Berlin, WI, USA
Re: LT gasping air
Labman - exactly correct. The problem that you are experiencing is that the fuel pump is pumping gas out of your tank, but there isn't any make-up air getting into the tank. A low pressure situation is being created. You hear a whoosh of air entering the tank when you remove the gas tank cap. Left uncorrected, the low pressure can create a vacuum which is strong enough to collapse the plastic fuel tank.
Make-up air enters through the hose beneath the right saddlebag, goes through a canister about the size of a mason jar located under the topcase, and then into the fuel tank. The cannister alos collects fumes from the tank and recycles them back.
The canister can become plugged as well, if you overfill the gas tank and fuel runs down the line inot the canister.
As a (cheap) first step, see if the rear hose is plugged.
Inside my 60 year old body is a 35 year old brain wondering what the hell happened.
2005 Suzuki Burgman