Weird Starting After Fill-Up

Scotty - every time I fill up the gas tank of my 2007 Suburban it sounds like the engine is half-firing

Scotty - every time I fill up the gas tank of my 2007 Suburban it sounds like the engine is half-firing until I step on gas. Once I do this it seems to run/idle normal. Does not happen again until I fill-up.

Any ideas?

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ScottyKilmer
ScottyKilmer

Editor

often a bad evap cannister vent valve does that, check that first

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