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    specialeddd's Avatar
    specialeddd Posts: 1, Reputation: 1
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    #1

    Oct 27, 2013, 05:47 AM
    2001 Honda Accord misfiring on multiple cylinders
    I have a 2001 Honda accord 3.0L v6 that is misfiring on multiple cylinders. If I pinch off the fuel return line it runs fine again? So I replaced the fuel regulator and it did nothing back to misfiring again. Pinch off the return line and runs fine?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Nov 7, 2013, 02:16 PM
    Check for a vacuum leak, especially around the upper intake manifold (UIM). Also, only use the original NGK spark plugs that came in the car, gapped to spec.
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