Hello all,
I've got a puzzler on my hands that i wanted to bounce off of the group. I'm working on a friends truck. 2006 f-250 automatic.
I just did the STC fitting new IPR and oil cooler repair kit. i made very certain everything was sealed up good becuase this thing was leaking oil from the top of the engine faster than we could poor it in (ok maybe not that bad but pretty bad)

so i got it all back together and after a bit of cranking to get the air purged out of the hpop and system it fired up. ran a bit rough at first then settled down.

I then filled up the antifreeze to the level in the tank that it should be. after about an hour of letting it run while i cleaned up the mess i noticed it started dripping a steady stream of antifreeze. i crawled underneath the truck and i can see it appears to be coming from what would look like the back corner near the hpop cover. my initial thought was the oil cooler-egr cooler connection fitting (blue rubber hose between the two) i ripped the turbo out and checked the top of the engine is dry.
so where else could this be coming from is the question.
The truck doesn't overheat but i can't fill the tank up it just runs right out.
I filled it up again and took it out for a test drive again to see how the engine was running. It ran fine around a few blocks then about the last half block it started bucking and the RPM was jumping up like crazy racing 3000rpm with the slightest touch of the peddle. got it back to the shop and shut it down. it was idleing horrible. i filled the tank up again and it will not start now.

I'm pondering all of these little issues and the antifreeze leak and i'm beggining to think i have a head gasket leak that is causing all of this.

I don't get any white smoke and no antifreeze in the intake.

Here are my thoughts.
If i have an head gasket leak and it's leaking into a cylinder that would cause the truck to run horrible and possibly not even start. it could also explain why i can't keep antifreeze in the upper tank it just drains out to the lowest point in the engine.

i'm about ready to tell my freind to find a nice cliff to accidently drive this truck off of at this point.
I don't even know where to start on this.

 

make sure there are no leaks on the degas bottle or connections to the degas

 

No leaks from that side of the engine. does the de-gas tank supposed to keep antifreeze up to the marks on the side?

I forgot to mention that i also pulled a code p2284
So tonight i'm going to pull the new IPR that i bought and check the screen again. maybe some junk flushed through the system and is on the screen.

 

Was it leaking coolant before you took things apart? If not im guessing it is related to the reassembly. And yes the coolant level is maintained in the degas, the bottom mark is the full mark. How does the oil look? Do you see an equivalent amount of coolant on the ground that you are losing?

 

I honestly suspect it was leaking coolant before. but i don't know for sure. When i got the truck from him it was not running (due to IPR failure) i did notice when i disassebled the truck to fix that that the tank was empty. i asked him if the truck ever overheated and he said no.

I just don't know where else it could come from. but it leaks out every bit of antifreeze i put in the tank goes into the motor then out somewhere and down the passenger back side of the engine.
The radiator is full if i pull the top hose off but it won't keep anything higher than that in the degas tank.

I checked the heater control valve and lines they are all dry also
I do have heat in the truck when it is running.

 

Boy I would sure question the degas bottle if you lose coolant only until it empties the degas bottle because it is the highest point in the system. If it was on the water pump discharge side of the system it would leak coolant until the water pump ran out of suction. Will it leak out with the engine not running? You might try starting it up with a full degas and take your light out and just watch closely on top of the engine. If the leak is external you should easily be able to find it. Did you make sure to installl the new O'ring where the intake bolts to the front cover?

look here http://dan.prxy.org/Truck/6L_bible_h.../Page_019.html

 

you may have hit it.....i didn't replace that o-ring on the front of the intake. it looked good but that could very well be the spot. Does autozone carry this oring does anyone have a part number? or official name?

It seemed like kindaof a cheesy design to me to have a flush seal on that intake. i'll look for the leak up front there.
Also does anyone have the intake bolts torque specs?

 

Im sure that O'ring would be a dealer item and probably comes in a kit, not sure if it is sold separately.

 

Intake manifold torque:

 

I cant find a part number for it but here is the link to the kit. 2006 Ford F-350 Engine Intake Manifold Gasket Set | FordParts.com Super Duty

You may just try making sure it is torqued down correctly and see if that does the trick.

 

my thoughts exactly. I had to spend $85 just for a silly o-ring

 

Tore the turbo out and removed the ipr that we just installed. So i could look at the screen.....the wire mesh was destroyed on the new one and i have only run the truck maybe an hour. Is this caused by garbage in the oil? This truck really needs to die.....
I put a new screen on it and put it back together. Still wont fire up. Ive done 2 oil changes trying to clean up the inside of junk.
I need to retest the ficm again to make sure that hasnt died on me also.
This truck is a testiment to what happens when you dont do your oil changes and maintainace!

 

Forgot the one good thing is that i think by retorqueing the bolts on the intake may have solved the coolant leak

 

Woot on fixing the coolant leak

 

the more i think about how this truck would just die and how rough it was running i'm starting to wonder if this isn't electrical. i live on a dirt road and when test driving it it would just cut out. sometimes i could get it to restart once i've had to tow it back to the house. now i just have a complete crank/no start issue.
I'm going to recheck all the connectors on bottom of the FICM while i'm testing the FICM voltage as well.