10/23/2026
That rattle on a cold start is not “just how EcoBoosts sound,” Tho a lot of them do!
On Ford’s 3.5L and 2.7L EcoBoost, a 2 to 5 second rattle at startup is one of the first warning signs of a stretched timing chain or failing cam phasers. Catch it early and it’s a repair. Let it go and the chain can jump timing, and that’s when engines get destroyed.
Hear that rattle on your F-150 or Expedition?
Call us at 319-458-9284 or book online at sunsetdiesel.co.