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2001 Mazda 626 Question: why would cylinders 2, 4, 6, all start missfiring at once brand new plugs wires

 

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jross1dad, 2.5L V6, Lincoln, NE, January 31, 2014, 16:18
 Rookie

car was running fine stopped at light started running rough and loud computer said these cylinders were misfiring also gave code 0400 any ideas?

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  • Answer #1

    G. T. Service Center (3051 Answers) , Stephenville, TX - (254) 638-3236
    ProfessorG January 31, 2014, 16:29
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     Master

    Check the EGR and see if it is stuck open. Make sure the plug wires did not come loose.

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