Low oil pressure/metallic tick at high rpms

Yeah I’ve had that looked at and it’s good there so I’m not sure. Appreciate the help.

 

If it's just the locking pins not locking in the phasers would operate normally once they have oil pressure, they just will rattle at startup and possibly at hot idle when oil pressure is low.

It may run a long time like that before something comes apart or it may blow up tomorrow, just one of those unknowns but I've seen engines go a long time that have cold start timing chain/phaser rattle/knock.

 

Interesting. So would the “fix” be replacing the cam phaser, or not worth spending the $1.5k to replace it lol

 

Well you have one on each bank.
The problem is confirming that's what it is, internal engine noises aren't the easiest thing to diagnose without some teardown. If you could use a long screwdriver or mechanics stethoscope to pinpoint the source of the noise or at least figure out which side it's on.

Maybe pull the VVT screens and see if they are full of trash.

Milage, engine condition (does it burn oil, leak oil, is it sludged up from lack of maintenance, etc), overall condition of the truck, and how long you intend to keep it are also factors to consider. 05 also has a higher than average chance of headgasket failure so that's also a factor to consider.

I can't really tell you what to do, if it was mine I would want to be certain of what I was after and if it's worth fixing before tearing into it but that may be easier said than done.

 

Gotcha. Thank you for the input. Head gasket has been replaced at like 105k miles. Also one thing to note, if you turn the key to where the starter is activated for a split second without even starting the engine, and then starting the engine, the noise dosent happen. It’s like doing that sets the pin in, reducing the noise and receiving normal oil pressure. The reason I question it sometimes is the metallic subtle tick when the truck is above 2k rpms. Just found that interesting

 

Certainly possible bumping the engine slightly cause them to lock in.
I wish I had a better answer but I don't.

Were the phasers done when the timing chain was replaced? If so were they OEM?

 

Not sure. I messaged the last owner if he checked the cams when he took it apart to replace the timing chain. Will update. I really appreciate the info it really helped. Could be nothing to be honest and I hope.


I’ll get a video of it tomorrow morning to see if that helps.

 

Alrighty well I actually found a fantastic replica of my noise. I know this is a 4cyl in the video but literally a copy and paste of my noise I swear lol.

https://youtube.com/shorts/dEPlaUCvaW4?si=Lc07zWnMIXoCldSG

 

Honestly to me that sounds more like timing chain rattle than phaser knock.

 

That’s what the last owner thought too but he replaced it a little before he sold it to me and also checked it again right before we signed papers two months ago and all was good. Maybe vvti gears? All I’ve seen on that is that it’s not worth replacing those as the noise just comes back

 

I have also noticed with the metallic noise at high rpms is that is goes away when the truck has been driven for 10+ minutes or driven throughout the day. Same goes for the loud noise on startup. I’m trying to get a video of the metallic noise when driving but it’s hard to get because my tires are loud and it wasn’t really that present today. Will update

 

Also, the previous owner recommended to replace the VVT gears as they could be worn out, and since the timing chain isn’t the issue than that would reallly be the only thing if there is a problem.

And it’s definitely not the heat shield.

Any solutions or inquires???

 

You could pull the VVTI screen on the passenger side and check it. It's pretty easy to get to. The driver side one is a bit more involved but if the passenger side is clean or clogged, I would guess the driver side would be in similar condition.
If you remove the passenger side front wheel, you can get to it through the fender well.

 

Ok cool, how would that contribute to the noise. Not questioning just curious so I know more.