01/14/2019
2012 ford F150 come in with the check engine light. Scanned the truck and found a random misfire code. With the truck having 110k customer approved doing spark plugs. Replaced all 6 took it on a test drive and the truck was misfiring wrose than when we got it. After a little bit of diagnosis we found that 3 of the brand new ford oem sparks had cracked porcelain. Replace them with new ones, and now the truck runs like a clock.
