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COLORADO 3.5 HARD TO CRANK AFTER FUELING UP WILL CRANK BUT RUNS ROUGH WILL LEVEL OUT ANYONE EVER HAD THIS PROBLEM. THANKS
Might be stirring up trash in the gas tank when fueling. I would start with changing the fuel filter to start with.
Vacuum canister is bad or charcoal canister. I just left truck running when fueling it up and was fine.