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SportTrac Discussion
Engine & Drivetrain
Trac Running Rough
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<blockquote data-quote="scott degroot" data-source="post: 923996" data-attributes="member: 66039"><p>Sounds like you have a classic secondary ignition misfire issue. Start the truck, set the parking brake, press as hard as you can on the brake pedal, put it in drive and then start pressing the gas slowly adn smoothly until you have it floored, chances are if it is a secondary misfire you will feel it, this may take a couple of tries. If that doesn't produce any results try mixing up a spray bottle with a salt water solution adn then mist the spark plug wires while the engine is running, chances are it will start to misfire ...this works really well in the dark that way you can actually see the spark jumping out of the spark plug wires. You should also be able to hear the spark snap also if there is a issue. If you know anyone there that has a name brand scanner they can access mode 6 data adn see which cylinder is actually misfiring. You may wait a long time for the check engine light to turn on due to a misfire on a Ford that's why the mode 6 data comes in extremely handy.</p></blockquote><p></p>
[QUOTE="scott degroot, post: 923996, member: 66039"] Sounds like you have a classic secondary ignition misfire issue. Start the truck, set the parking brake, press as hard as you can on the brake pedal, put it in drive and then start pressing the gas slowly adn smoothly until you have it floored, chances are if it is a secondary misfire you will feel it, this may take a couple of tries. If that doesn't produce any results try mixing up a spray bottle with a salt water solution adn then mist the spark plug wires while the engine is running, chances are it will start to misfire ...this works really well in the dark that way you can actually see the spark jumping out of the spark plug wires. You should also be able to hear the spark snap also if there is a issue. If you know anyone there that has a name brand scanner they can access mode 6 data adn see which cylinder is actually misfiring. You may wait a long time for the check engine light to turn on due to a misfire on a Ford that's why the mode 6 data comes in extremely handy. [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Trac Running Rough
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