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  1. #1
    New Member 16 Rep Points forevercasual's Avatar
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    Misfiring after spark plug replacement?

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    So today at 24k miles I decided to replace my spark plugs with NGK one step colder. This is my first time gaping plugs, but I feel confident I got them all between .028 and .029. I am currently running an e30 tune. I had a bit of an issue where it appeared that the coil didn't have a good connection to the plug. After troubleshooting it appeared to be ok. After a test drive for ~30 min cruising with 3 3rd gear pulls I registered 10 misfires. I've never monitored misfires before, so I don't really know if it is a normal or not. I also noticed that I had a knock on cylinders 1 and 3 which I've never had on this tune. Is it common to have misfires like this, should I look at replacing the plugs with a normal heat range, or is there any other troubleshooting that anyone can recommend? Thanks for the help!

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    https://adamtuned.myshopify.com/coll...10-spark-plugs

    There is a possibility you may have damaged your plugs. Definitely read through the link.

    Sent from my XT1650 using Tapatalk

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    New Member 16 Rep Points forevercasual's Avatar
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    Thanks for the link. Guess its better to be safe than sorry and get another set.

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    Senior Member 127 Rep Points me32's Avatar
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    Did you make sure all the plugs are seated all the way down?
    2008 Shelby GT500
    2921 out of 6513 coupes
    132 of 314 Alloy Metallic
    Shelby Dash Plaque,FRPP TVS Super power pack ,Drag Pack,SVT handling pack,FRPP Cobra Jet TB/MAF/80lb injectors,J&M UCA,LCA,Adj.PHB,SFC,PH A/D,O/R H, DynoMax 3in,CHE, Shelby Rad/HE,VMP 2.59,KB BAP,L&M plenum,BMR KMEMEBER,AED CUSTOM RETURN STYLE FUEL SYSTEM.
    91/E85 tune by SHAUN AT AED
    700HP/700TQ ON E85
    10.78 @ 129MPH 1.644 60FT

    2014 Fiesta ST Green Envy Tricoat
    2014 Tuxedo Black Fusion


 

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