engine rattle on startup

[tireguy52]

is this the cam phaser noise I have been hearing about? https://www.youtube.com/watch?v=UBqadMpXwBU
Dealer cant seem to get it to make this noise. i have 30 videos like this one that vary from 2 second to 20 of the rattle. surely I am not the only one?

 

[MGD]

Yes, it is.

 

[tireguy52]

so did they fix yours or you end up with a new truck? if its just a matter of replacing that sensor i may be ok. if its blocked oil passages and they want to long block it i may put up a fight!

 

[kandewinn]

so did they fix yours or you end up with a new truck? if its just a matter of replacing that sensor i may be ok. if its blocked oil passages and they want to long block it i may put up a fight!

MGD has no raptor, troll that uses multiple logins.

That being said, my truck sounds nothing like yours. Take it to the dealer!!

 

[MGD]

Hmmm... nope. BUT, I do have experience with this.
It is not a ‘bad’ sensor. This is an internal, mechanical failure.

 

[Dabrwu]

Had my 17 in for the identical noise last week. Dealership not exactly sure. Through discussion with Ford, they have ordered VCT and timing chain, one of which is shown as not available on their microfiche. Ford wanted them to tear apart but dealership reluctant without knowing parts availability. They gave it back to me and I am driving it.

 

[aschiller98]

Mine makes a similar noise, but only for a second after the autostart turns back on at a light. The dealer blames it on a typical noise of the v6 startup which seems bogus to me.

 

[smurfslayer]

This truck has something bad going on that may be more than the ‘phasers.
<insert geeky star trek pun here>

That said, check out @MJslasherADMIN’s thread in the gen 2 engine section. The dealership re-flashed his first (buy back, ’17) and 2nd ’18 Raptor and both times the flash helped with the noise emanating from the engine.

give it a look.

 

[MGD]

Root cause for this is lack of enough oil on the phasers after the engine has shut down. In previous 3.5 Ecoboost, it was due to clogged oil feeders to the phasers. This clog was found to be related to casting debris (from manufacturing) or oil sludge buildup. This was supposed to be fixed in the 2nd gen ecoboost, but it looks like tuning is required to somehow boost oil flow to the phasers on startup. I am not sure how they are doing it, but everyone should get this tune updated ASAP.

 

[ogdobber]

is this the cam phaser noise I have been hearing about? https://www.youtube.com/watch?v=UBqadMpXwBU

Dealer cant seem to get it to make this noise. i have 30 videos like this one that vary from 2 second to 20 of the rattle. surely I am not the only one?

There is a (new) tune where they increase the duty cycle to the phaser solenoid. Check mj's thread (look at the last few pages for his 18) Engine Trouble - Cam Phaser Replacement
https://r.tapatalk.com/shareLink?sh...forum.com/showthread.php?t=54883&share_type=t


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