Sounds like a clogged line from the tank to the canister. Possibly even a bad gas cap. Are there any codes stored in the computer? Is the light on? I do believe there is actually a check valve in the system as well. If I get some time tomorrow I'll do some research on it for ya.

John Luttrell
2001 4x4 short cab, 3 inch lift with 33 inch mudders and Powertrax no-slip in the rear


1991 Jeep YJ, 4 inch suspension lift on 33" BFG's