HomeAll Topics3.5 Ecoboost rattle in engine when I first start up 3.5 Ecoboost rattle in engine when I first start up Sponsored This topic has 0 replies, 1 voice, and was last updated 1 week ago by MrsRepairTech. Viewing 1 post (of 1 total) Author Posts April 18, 2023 at 9:39 am #159625 Tom HeadParticipant 3.5 Ecoboost engine has a rattle for about 1-2 seconds, when I first start up in the morning? Any concerns I should have? Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In Sponsored Sponsored Subscribe to Ford Authority For around-the-clock Ford news coverage We'll send you one email per day with the latest Ford updates. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored