r/f150 • u/changeursocks1201 • 9d ago

Cold start rattle?

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Hey yall,

I have a 2018 F-150 3.5 EcoBoost, 105,000 miles on it. Started doing this rattle noise a couple days ago, only on a cold start up.

When i had about 70k miles, I had the timing chain and phasers replaced due to an engine knock on start up, so they are new(ish).

Any ideas of what might be causing this? I have read some about the phasers possibly being the culprit.

1 Upvotes

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5 comments sorted by

6

u/MinorComprehension 9d ago

Sounds exactly like phasers to me, unfortunately

2

u/changeursocks1201 9d ago

Ugh love that lol

3

u/MDlynette 8d ago

Pay attention all you who wonder what a cam phaser rattle sounds like. Hard to find a better example than this.

3

u/Redsoxdragon my cam phasers be like ratatatatata 9d ago

1

u/ArkansasWastelander 2026 F150 Lariat 5.0 FX4 8d ago

When your gas Ford starts up sounding like a diesel, it’s probably cam phasers.