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  1. Rough idle -> tune up -> rougher idle

    E60 M5 and E61 M5 Touring Discussion
    Hey all, I'm perplexed. I had what seemed to be the common issue of rough start and idle after filling up with gas. I searched in the forum and decided to change the charcoal vent canister in the passenger wheel well. I also took the time to change the plugs (didn't break any of the coils!)...
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