sputtering

Good evening all, I am pulling my hair out (what's left of it) trying to figure this out. I have a '92 Roady wagon with the 350 TBI. The problem I'm having is a hesitation (kind of spits and sputters) on acceleration. Here's the really weird part, if the gas cap is on, it runs worse (almost...

Hi. I have a 2000 Buick LeSabre Custom with the GM 3800 series II engine. It's got 245k miles and it's been stalling, sputtering, hesitating, and unwilling to start at seemingly random intervals. And, such is my luck, there have been no Check Engine light at any point during this saga...