mirkopro

Hello, i have this strange noise coming from the engine only on cold start, i uploaded 2 videos.
F150 2018, Eco boost 2.7
It happens for like 3-5 seconds, depends how cold outside, very loud, then disappears after car warms up. Then when I start driving i can hear this noise when gears shifting. Then its gone after fully warmed up.
Part 1 on start
Part 2 when start driving

It started 2 years ago but getting worth now..
Before I take it to dealer I would like to know your opinion. I tried searching on youtube and could be cam phaser but it sounds different.
I did regular maintenance, changed transmission oil but the problem started before that.
What can this be??

Bubbabiker

My guess the wastegate linkage is rattling. Plenty of threads on this and how to fix it using E clips.

https://www.f150forum.com/f118/2-7l-...te-fix-516763/

willyfixit

Cold start sounded like a loose heat shield.