Question about Buick Regal

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Check engine light came on, ran codes and got miss fire on #6 hole. changed plugs and cleared code, light came on again. ran codes and came up with P0440 evap. checked lines and found no defect. cleared code again, light came on again after about 3 days. thinking it could be the gas cap but installed a new after market cap about 6 months ago. could it fail that quickly? also charcole canisters never been replaced...Dealer item? can you clean them? any help?

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Would guess that canister would be dealer only but never hurts to check the local parts store.Could also check online parts store.They say this problem comes from topping of your tank.When fueling and the pump shuts off you are not to put any more in.Just a thought.

Posted on Feb 02, 2010

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