Morning gentleman, I'm a noob here, so please forgive any mistakes.

I'll get right to the point, I'm helping a friend sell a decent F-250, but it has a problem.

Mileage is 218K, Stick Shift, 2wd

Here's the issue. History, it was completely overhauled for some reason at the dealer about 70K or so ago. Under warranty, not sure the details of that.

Probably not related, but last year, had oil changed (Went from amsoil to conventional), directly after oil change, heard a sound, like a "puff" sound or something, like something let go, hose or something.

Since then it he parked it, and here is what it does, constantly, problem is NOT intermittent.



The Problem:

Start cold, it has a lot of smoke, puffs, like it's one cylinder or something, but smokes pretty good. Have to let it run for like 15-20min or MORE before it clears up, after that, no smoke at all. Sometimes I let it run for 10-15, and start driving it, it clears up.

Has noticeable tick, sounds a lot lick a lifter (not saying that's what it is, just describing the sound), it's all the time, and warm, not exhaust leak. Very consistent.

Idles very rough cold, and a little rough warm. The tick you can hear on both accel and decel.


I think that's it, shoot me for any more questions.

He said all this happened at the same puff, smoke, tick.

I'm a former ASE tech, and occasionally tinker around, but my knowledge on Diesel is limited. We have to get this fixed before sold, may take it somewhere, but was hoping through the power of the internet and you smart folks, we may be able to figure it out ourselves.

Thanks for your time.


Cliffs: Truck smokes cold, clears up warm, then has noticeable tick, rough idle, misses a bit.

 

Welcome to FTE.

It would be best to have the codes read by someone that can read PSD codes. We can guess all day but codes would help.

Sounds like you may have a bad injector o-ring/s. Could be the UVCH could be loose. Could be the #8 injector doing its thing. CODES.

 

No check engine light, may it still have codes?

 

Yes, could still have codes.

Can you tell which side of the engine the tic is coming from?

 

I'm gonna start it now, maybe even get some vids.

 

With the puff sound when it all started, have u checked all your turbo and intercooler boots? These things run all sorts of bad if one of those come off.

 

I did a quick visual on the boots, seem to look ok. Has boost when I get on it a bit on the highway, can feel/hear it.

The noise seems to definitely coming from the drivers side. Maybe that will help you guys a bit. Going to try to post vids here in a few.

 

Whats outside temps, where you live?

Have you tried switching back to synthetic 5/40 oil?

 

Ohio, it's about 70° right now, been from 70-90 all week, hasn't seemed to effect it at all. No haven't tried that yet, switching back to Syn. I'll have vids here in about 10min or so. Stay tuned

 

.......

 

7.3 juevi - YouTube

7.3 juevi part 2 - YouTube

Have a few more, give me another few minutes

 

with motor running, open hood and remove the oil fill cap, then lay it upside down on the fill neck to see if theres pressure behind it, popping it off

FWIW, i got that same ticking sound...?

Also, cold side tube at spider, looks to be a boost leak of some

And, from video, go get more fuel..

 

7.3 juevi - YouTube

Best vid of the tick, watch the whole thing, if you don't get motion sickness :P

 

ot...i gotta get a new shifter boot for mine. Man, your trucks quiet, inside the cab.

 

Well, that makes the tick sound even worse haha. So there you guys go. I have some more vids of the smoke if you need them, before the test drive. But that's the jist of it. Smoke cold, after drive, tick. Both are pretty bad imo. Need to fix'her up to get her sold.