MHOWELL34

Yeah if it was lash adjusters when the oil thins out when its hot it would tap ALOT.

Cam phasers sound like a knock tho.

The 2nd time you replaced the tensioner was the seals blown??

codybigger

No. I didn't see any leaks, but I figured why I was back inside there I my swell just out new ones of them in again. My truck always seems to tap or tick, not excessive but I haven't got to that yet. My concern now is the knock. It sounds like a diesel starting in ether in -20 weather.

tareed94

I'd say replace the phasers again but with Motorcraft, the rest of the stuff should be fine

codybigger

Any idea on what my start up rattle could be? It sounds like when you change your oil an the first few seconds before it builds pressure. It use to just be when cold, now it does everytime.

primalurges

Yes the lash adjusters would tap cold and hot and oil viscosity wouldn't make enough of a difference for you to notice. If it's the phasers the noise would be present from a cold start until after a couple of minutes of idling. I have a had a light knock for about 80k but have decided to live with it. I did swap out lash adjusters because they were seized and noisy as hell. Many people on this forum are chasing engine noises. Don't know how much better motorcraft phasers are given we were all running them when our engines became noisy. Good luck with whatever route you take.

HeathMc

I know this is off topic some what but I won't use dorman in anything else I own. Bought a door actuator for my 06 Yukon and failed after about 6 weeks. So I'd suggest if your tearing into the engine I'd use all OEM products. Good luck and keep us posted.

codybigger

I buy and install dorman parts daily on all vehicles. Just like everything else in my opinion, there's good and bad. I'm thinking my truck may need the lash adjusters soon to. I'm gonna try and get the phasers returned an get ford parts

MHOWELL34

Mine rattles as well for about half a second, it did it for about a second and half on 5w20 motorcraft... My old 2v on my expedition did it all the time. Welcome to the Triton 5.4 DOHC Modular engine lmao.

5w 30 helped mine tho, havent heard it at all since everything has settled in on the new oil

Fizzy

I have a 2004 Lariat, 5.4, crew cab with 290k. About 5K after a reputable garage replaced cam phasers (I supplied Dorman), timing chains, tensioners, guides, etc. Ran great after but never really drove it other than in town, then it started running rough again. Various codes ie, P0022 and miss fires on bank 2, etc. First went to the same mech and he suggested we replace cad converters first since he detected some blockage. Didn't want to dump a bunch of $ into exhaust until I was sure what was going on. Took it to a dealer and after a quick $200 diagnosis it was determined I needed new heads since small metal shavings were found in the filter/screen of the left VCT Solenoid.

Didn't like either answer so I dove in myself. What I found, a broken right timing chain guide (parts everywhere) and the guide bolt showed lots of wear (shavings) from the chain on the Right side. Turned the crank until TDC so I could check timing chain marks. I noticed the left chain "off" several links on the Left phaser, and the Right phaser one tooth off. What I found odd, the Right Cam Phaser was installed by lining up the "L" on the right phaser, just like the left side. In other word, the Right Cam Phaser was 180 deg off.

How was it running?
Was the cam phaser 180 def off positioning the root cause of my current problems?
Can low oil combined with cad converter plugging cause timing to jump or break guides?

tareed94

That makes me think you've got a blown tensioner seal that's not letting it maintain adequate tension on the chains, allowing them to slap.