Ford F150 3.5L V6 Ecoboost Misfires: Spark Plug Replacement
#1
Ford F150 3.5L V6 Ecoboost Misfires: Spark Plug Replacement
Ok so besides intercooler condensation causing misfires this is the #1 reason for misfires on this engine. Any misfires on this engine has great potential to damage the catalyst and should not be taken lightly. As many know by now boosted engines are hard on the plugs be it iridium platinum whatever and you may find the need for new plugs by 50k miles. More so now as many are coming in with carbon tracking as this one had. In this video I walk you through the procedure to change out plugs on these engines with the revised plugs, gap specs and TSB that have all come out recently. I hope this helps.
#2
Great video! Just as a word of warning to people trying this at home, my 2012 boots were ALL pain in the butt to get out! Took several minutes per boot, very frustrating and needed patience. I used dielectric grease with a Q-tip to make sure the inside of the boots were well coated for reassembly and so next time it (hopefully) won't be so hard to remove...
#5
You will feel a rough idle and or jerking while accelerating. It takes quite a few misfires for the light to actually set.
#7
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#8
I know you mentioned the moisture issue causing misfire. Do you know if there is a new TSB to remove the plastic shield over the intercooler. I had a 2012 with this issue, and I still have the plastic shield installed. Wondering if that can be removed with an computer update.
Last edited by makuloco2000; 01-29-2015 at 04:27 PM.
#9