https://stream.echo6.co/videos/watch/e7b87030-be5e-4676-8d35-14f18771cbb0 Part 2 of this 2018 Ford F-150 3.5L EcoBoost startup misfire diagnosis is here. In Part 1, after proper testing and not just blindly blaming the ECM like the previous shop, we made the call that the #4 port fuel injector (PFI) was the real problem causing the brief startup misfire and injector-related codes. Now it’s time to tear into it. We’ll pull the upper intake, remove the fuel rail, test the injector one final time, replace the faulty #4 injector, and see if our diagnosis was actually correct… because confidence is nice, but verification keeps you employed. Will the startup misfire be gone? Did we make the right call? Or will this truck continue its campaign of psychological warfare? Let’s find out. Need access to wiring diagrams and repair info for your vehicle without breaking the bank? Use this link here to get affordable access to Mitchell On Demand DIY https://eautorepair.adtrk.biz/?a=11051&c=24&p=r&s1= Want to support us AND get early access to the SMA videos as they are uploaded? Consider joining the SMA "YouTube Membership" by clicking here: https://www.youtube.com/channel/UCtAGzm9e_liY7ko1PBhzTHA/join You are also able to support us on Patreon if you feel inclined to do so by clicking here: https://www.patreon.com/southmainauto CHECK OUT OUR "SMA SWAG" STORE! Go on Teespring and get your very own SMA merch! https://teespring.com/stores/the-sma-store If you don't like Patreon feel free to use the "PayPal Me" link: https://www.paypal.me/SouthMainAuto The South Main Auto Amazon Store: https://www.amazon.com/shop/southmainautorepairavoca AES Wave Automotive Diagnostic Tools: https://www.aeswave.com/cart.php?m=affiliate_go&affiliateID=2525b91fc8e906e8215984074c9d9e8f&go=https://www.aeswave.com/Miscellaneous-p9347.html Thank you so much for the support! -Eric & Vanessa O. Disclaimer: Due to factors beyond the control of South Main Auto Repair, we cannot guarantee against unauthorized modifications or improper use of the information provided in this video. South Main Auto Repair assumes no liability for property damage or personal injury resulting from the use of any tools, equipment, chemicals, lubricants, or information presented. We strongly recommend following safe practices when working with power tools, automotive lifts, jack stands, electrical equipment, blunt instruments, or any other tools and equipment shown or implied in this video. No information in this video creates any express or implied warranty or guarantees any particular result. Use this information responsibly and at your own risk. #FordF150 #EcoBoost #InjectorReplacement #Misfire #AutoRepair #Diagnostics #MechanicLife #FordRepair #ShopLife #Part2 Wed, 10 Jun 2026 08:40:04 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/e7b87030-be5e-4676-8d35-14f18771cbb0 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.