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    tomdel45's Avatar
    tomdel45 Posts: 45, Reputation: 1
    Junior Member
    		  
    #1

    Jul 27, 2012, 05:02 PM
    Misfire cylinder
    I have a 1997 dodge ram pick up. What would cause a cylinder to miss fire ? And how can I fix it. Do not see and spark on or around the spark plug wire
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Jul 27, 2012, 05:14 PM
    . Only use Champion Spark Plugs, properly gapped, on Dodge pick-up trucks. Replace them, if they haven't been changed in 3 years.

    . Apply dielectric grease to the top electrode and porcelein portion of the plug.

    . Replace coil, if the problem persists.

    . Check engine compression and look for intake manifold leaks, in extreme cases.

    . Examine wiring going to the fuel injectors. Breaks in the wiring (e.g. by mice) can affect injector performance and cause incorrect wave forms, which can throw a code.
    tomdel45's Avatar
    tomdel45 Posts: 45, Reputation: 1
    Junior Member
    		  
    #3

    Jul 28, 2012, 08:19 AM
    Will a miss fire make you fail a emission test
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #4

    Jul 28, 2012, 08:40 AM
    Yes, since it causes the Check Engine Light to stay on.
    tomdel45's Avatar
    tomdel45 Posts: 45, Reputation: 1
    Junior Member
    		  
    #5

    Jul 28, 2012, 01:06 PM
    What if I turn the engine off. Will it still fail?
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #6

    Jul 28, 2012, 01:43 PM
    It won't pass, until you fix the problem.
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