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I have a 2002 Outback sport. I began having hesitation problems about one year ago. The hesitation would only occur after a fuel fill up and last for about 1-2 minutes then gone. Did not occur at idle, only when driving. Now, I've been having the issue at varying fuel levels regardless of fuel fill up or not and the hesitation appears to be worsening. The Knock sensor has just been replaced with no improvement in the hesitation. 

I've suspected the fuel filter, water in the fuel, what else? Any thoughts?

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^^^ hmmm, I think I read where there was a weight limit on how much a canister could weigh. maybe find that value and pull the canister and weigh it? Saturated cansiter would weigh a lot more than 'dry' I'd guess.

 

maybe the gas tank's vent valve stuck open would lead to this? Or a malfunctioning Purge valve?

Edited by 1 Lucky Texan
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