My 2019 Ford expedition started making a rattling noise when starting the engine, the noise continued to get louder and the engine beagn to make a knocking noise when idling, and trouble starting when cold. I was ouyt of warrenty by a few thousand miles when I had to bring it to be repaired and I was told the cam phasers were faulty and it was a known issue even though Ford not issuing a recall. In my vehicle there was a spring missing and parts loose that dislodged into the engine that could cause it to get caught distroying the entire motor while driving which could seriously injure not just the driver but loose control of car and cause major accident. Doing research this seems to been a common issue in the Ford expedition 2018-2020. There should be a recall for faulty part not just if your still covered under warrenty, it is a serious malfuntion that can really cause bad accident that is not a service or operator error that causes a malfunctioning/breaking of cam phasers.