Joe45

The reason I asked is because I just bought a used 2012 with 86000 miles on it and the carfax report said there had been some work done to the cams at 62K. Long story short I talked to the previous owner and the dealer that did the work and they said the chain, guilds and phazers were all replaced 5 months before the new timing chain came out. Started fine at the dealer, ran really good to. Took it home where it sat for one week and when I fired it up it had the timing chain rattle. I was pretty pissed!
From talking to the previous owner the first 2 oil changes were done by the dealer after that he changed it every 7-10K with moble one full synthetic. He said it at 62K it got P0016 code and he quit driving it for a month until the dealer finally agreed to fix it.
I changed the oil in it as soon as I got it home with moble one full synthetic. Then put about 500 miles on it and noticed that the oil level had moved about a 1/4" above the full hole on the dip stick. Although the rattle never came back in the 500 miles my conclusion was that this truck had the fuel in the oil issue and the long duration oil changes took out the timing chain. (just a guess) I than replaced the high pressure fuel pump and changed the oil again. I'm currently watching the level to see if it rises. I have let it sit up to a week and a half(not my primary vehicle) and the rattle has not returned.
I’m going to call the dealer back that did the work on the chain and see if they will e-mail me a complete list of everything they replaced on this truck. I will keep you guys updated with what I find out.

Salinger

Since I am away from home at this time, I will confirm you later what part number is my new chain, but I'm pretty sure it's the new version.
And Yes, same for me, my daily start-up "rattling" disappeared when shifting with top quality synthetic oil with the OEM Ford oil filter and having replace it each 5-6Kkm (3500 miles). Perhaps, I still noticed some "rattling" at start when truck sits for one week or more but I don't really care anymore.
My chain replacement only deleted the P0016 code related to its stretch and didn't had a lot of influence on the "rattling" other than reducing its noise a bit.
I think you guessed right that the chain stretch is related to the fuel contamination in the oil and where there isn't any more viscosity; wearing excessively all moving parts during this extended oil change at 7-10K miles?
My question for you is HOW can this high pressure direct injection engine can pour some fuel in the oil at this rate, raising your dip stick 1/4" in 500 miles? From leaking fuel pump? Injectors? Leaking piston rings?
This is a lot! Raising oil level near 1/4" require more than half a pint!! This is "washing" your motor on a continuous base.. And degrading the oil viscosity in the same time frame.
Thanks to keep us updated on what you or your dealer will find on this issue.

Joe45

The timing chain on my truck was replaced in April of 2014. I thought I read somewhere that the new updated chain wasn't available until October of 2014. Thats why I want to see if the dealer that did the work will email me all the part numbers of the work done. As far as the fuel in the oil I read the seal on the high pressure fuel pump can fail so I started with that. Worse case I have a spare($270 ebay). I guess I could rig up some fittings and pressurize it with nitrogen and look for leaks on the old one. Are the injectors known to contribute to this also?

Salinger

I was aware of this part new release, and Dealer should be able to guide you on this part number upgrade & release. I also know that Ford replaced the TBS in relation of this P0016 code with a new release of procedures with this new chain part number.
I suppose that a bad fuel pump seal makes sense to "fill-up" the oil level since pump is partially located under the cams cover. Also, a "stuck open" injector can wash out a cylinder by pouring continuously some fuel, perhaps on this issue, I would expect that an O2 sensor or fouled spark plug would flash-on a OBDII code?

Joe45

No codes, It runs great! I just read on another forum some guys had oil 2" over full on the dip stick and had black smoke out the exhaust. So I guess I shouldn't jump the gun yet. I will keep an eye on the level and sent in a oil sample for analysis at 3000 miles and see what the results are.

papa tiger

Short trips and constant restarts like going to the neighborhood convenience store etc. won't allow the motor to heat up constantly and remove the gasoline injected rich cold running and change over the fuel system to warmed up lean injection so it continues to inject rich. Take the truck daily on a 20 minute 45 mph + drive so the catz temps and lean injection are working together. This will boil away the gas in the motor oil dilution to the greater degree.

Joe45

I also read about short trips being bad for the ecoboost. The shortest trip I have made with this truck since I bought is 20 miles. Like I said, it’s not my primary vehicle so I don’t drive it that often. I did get my oil sample containers in the mail today so Im ready when I get 3000 miles on this oil change.

Cord

Well, just got a call back from my service writer. This dealership has been in transition since they fired the original service manager that my truck was repaired under. My service writer who did my recent oil change has heard the noise and has been quite sympathetic to the problem and what I've invested in the truck. Basically he can't fathom why they wouldn't have replaced the second phaser when they were into the engine the first time. The problem is that he hasn't been able to convince corporate or his service manager to back up the repairs. Interesting because there is supposed to be a 2 year warranty on repairs and I was complaining about the noise returning a week later.

Well, low and behold the service manger has now been replaced. And he was replaced by my service writer! Just got off the phone with them and as a goodwill measure the dealership is going to replace the drivers side phaser on their dime!



I asked that since they are already digging into the engine if I could buy the parts and have them install a new timing chain as well. He was agreeable to doing this and wanted to research the change in part numbers to see if it was a part or just a manufacturer change. I'm tempted to put a new passenger side phaser in as well, but I'm not sure of the cost associated with this.

Could this be the permanent fix that has eluded others????

papa tiger

Probably most often event just as diesel fuel pump seal leak: Copy from above entry.
Noticed that the oil level had moved about a 1/4" above the full hole on the dip stick. Although the rattle never came back in the 500 miles my conclusion was that this truck had the fuel in the oil issue and the long duration oil changes took out the timing chain. I than replaced the high pressure fuel pump and changed the oil again !

papa tiger

Thought this is interesting even if not the 3.5EB timing set up it is still informative.