Question about 2002 Chevrolet Blazer

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2000 blazer runs rough after gas tank was overfilled

2000 chevy trail balzer gas tank was over filled check engine light came on and now the car runs rough at times. what can be done to repair the problem

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  • pdiduk Jun 03, 2009

    when filling the tank the nozzle was pulled back to fill the tank because the nozzle kept shutting off..... the blazer started running rough rite away and the check engine light came after a few miles down the road.... I did go to auto zone to have it checked ....the codes they came up with had to do with the evaporater system ..... which could be several different things.... it is the correct gas cap and it is on tight... it is running better but it seems to run rough when its under a load almost like its hesitating... was running great until this happened ...... THANKS

  • ccn7 May 11, 2010

    What do you mean you over filled it with gas? Do you have the gas cap on tight?

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There is a vapour purge line from the tank to a charcoal cannister. The line& cannister has been contaminated with liquid gas. When the engine attempts a normal purge from cannister it gets loaded with raw gas, causing rough running and cherck engine light. Replace cannister. Never over fill gas tank, especially on hot sunny days

Posted on Jun 06, 2009

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Posted on Jan 02, 2017

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