So...here's the saga. I have a early 2004 Exursion with the 6.0l (icp on rear of engine).

1. I had an injector stuck open and was blowing smoke / running rough. (diagnosed by Ford).
2. I had a turbo leak from what seemed like the center of the turbo.
3. I spoke with the folks at Hotshot Secret and purchased their product to see if it could free the stuck injector instead of replacing it.
4. I did a fresh oil change this morning and added the two quarts of hotshot secret (13 quarts of Rotella T5 and 2 quarts of hotshot secret).
5. I drove a little less than 50 miles.
6. Truck started running rough and died at a stoplight.
7. I waited a few minutes, and it restarted and I was able to limp it into a parking lot.
8. Pulling into the parking space it was barely running, and then it started revving on it's own...first time up to about 3000 rpms...came down to near idle and I turned the key off. It still revved on it's own up to about 4000 rpm before shutting down.
9. I got out, popped the hood and notice oil had sprayed all over the drivers side of the engine compartment.

...and that's when I called the tow truck and ordered some tacos to ease my pain.

Any thoughts or advice would be greatly appreciated.

 

Sounds like a possible run away, turbo seal leaks oil into the intake

 

Fuel into the oil (from a failed injector) dilutes the oil
Diluted oil fails to properly lubricate the turbo bearings
Unlubricated turbo bearings fail and oil gets into the intake (or even the exhaust when you have an EGR system that has failed open)
Oil acts as a fuel supply to the cylinders
Engine runs on its own

Failed injectors are a serious issue. When they are dumping fuel into a cylinder, no oil or fuel additive will help. Thinking these additives can fix any injector issue can delay a proper repair to the point of major damage.

 

Thanks for the information. What is the likely damage? Any idea? Thanks.

 

Engine replacement is quite likely. To quote a fellow tech, "an unrequested increase in engine speed usually results in an unrequested engine replacement". Any time there's an engine runaway, there's no governed limit to the engine RPMs, meaning the engine ran at higher speed than its design limits. Factor in running the engine with fuel contaminated engine oil and it only compounds this effect on the bearings and all the engine internals.

 

Runaways are scary. Glad you could get shut down before it got away. Diluted oil could damage your main and cam bearings, as well as every friction component if ran like that for a long time.

 

It only revved up to 3,000 to 4,000 for a few seconds. Hoping that was lucky?

If I do have to do a motor swap, any advice or reference to sources would be appreciated.

 

I think 4000 rpm is what the governor is on my Excursion. Have to do that damn snap test every year.

 

I started a seperate thread and asked this question, but I thought I would ask here as well. If I wind up needing to swap the engine...

I've read a few threads where guys have swapped 06 / 07 engines into 03/04 F-250s. Apparently, it's a straight forward swap with the only issue they had to resolve being the length of the harness connection due to the ICP sensor location.

Are there any other issues that would come into play because of it being an Excursion vs an F-250?

Thanks

 

No, you've got the harness situation correct.

 

If I was in your shoes I'd put new injectors in as well as a new turbo and continue driving it. Any internal damage will be immediately evident through unusual sounds and temperatures. Temps can be monitored and sounds can be tracked down.

 

Thank you.

 

That's looking like the current plan. I'm just trying to make sure I understand all of the possible options and what would be involved.

Speaking of the turbo. Mine is an early production 04. Can anyone tell me if a turbo from a later year will work? Or if not, what else would have to be changed to make it work? Thanks.

 

Along with the turbo the pedestals were changed.

 

Thank you. So to go to a later model turbo I would also need to purchase the later model turbo pedestal and it would all bolt up in my truck? Is that correct?