摘要: |
My good friend Rick was faced with a challenging 2017 5.4L Ford F-150. The truck exhibited a single-cylinder misfire that only reared its ugly head at throttle tip-in during the 1-2 gear shift. It never oc-curred under heavy load. Through experimentation, Rick could replicate the symptom in the work bay. In "park" and at 1,700 RPM, he could occasionally reproduce the misfire, giving him the opportunity to view some basic scan tool data. The data showed the misfiring cylinder to be cylinder No. 1. |