Well from my previous post were I tried to take my turbo out and all I went ahead and drained the coolent, did a few flushes of the radiator, cleaned the degas bottle out, flush the heater core, then roughly back flused my oil cooler from the EGR hose (wasn't fun since I forgot to by parts, so I had to use my hand and my connection on my hose). Flushed as much as I could.

Once I was done back flushing and all filled with distelled water a couple of times, then got ready to fill her back up. I had my coolent filter valves off since I had already taken it out.

Went ahead and put coolent back in and did the 50/50 mix and ran for awhile, currently I haven't installed the high idle switch so usually I would have a small pipe, but since I couldn't find it I used my ratchet bar and was able to keep RPM around 1500 to 2000, it was a little tricky but it worked.



Once I got coolent back in and kept a eye on level and adding distelled water to get to the correct level I went to NAPA and got a coolent filter, well they had to get it from there warehouse so i had to come back a couple of hours later, now I got new coolent and new filter installed.

Looking at my records its been over the 500 miles to change the first filter (time to work on the truck has been crazy). I used my Ridgid metal blad to cut the filter open and it didn't look as bad as I thought.

 

Seeing how you flushed the heck out of the system, it doesn't surprise me that the filter is pretty clean. I'd let it go 6 months and check it again...if pretty clean, go to once a year changes.

 

Well before I did any flush or all, and when I decided to refill with water to get stuff running through before I did all the flushes today, I turned the valves on the filter off. It might of been when I went to Ford one day and had them do a coolent flush, and all they did looking at the ticket was drain the radiator and then refilled with straight coolent.

During this whole process I disconnected the lower hose and also took the drain plug out. When I took it out today the wrench area snaped off, but the plug was still in. Well what I finally did after stopping at NAPA and got a new plug was got back home and took the lower hose off, then after flushing for a little while, looked at the plug and took my big flat blad screwdriver and was able to turn the plug out enough that I could take it out.

Luckily i was able to put the new plug in and flushed a few times and all then refilled (took about 4 hours in total)

 

Roughly back flused my oil cooler from the EGR hose? How did you do that, I tried it once and I could not get any flow of water through that hose. Where does it bleed when you flush through the EGR Cooler?

 

Well with my hose that runs from the EGR cooler to the degas bottle, my nozzle on my garden hose is small enough to push water, the only problem was that I didn't get a copper connecter that I could connect to the garden hose and connect straight to the hose. I had one of the block drains out and the lower radiator hose off. Water was flushing out both the hose and the block drain.

I did this for about 15 minutes, then I pushed some air through the hose which pushed the water out (there might of been just a little remaining but I got most of it out)

Now if you didn't have any flow then probably your EGR was clogged or your oil cooler was clogged enough that no flow would go through.

 

That hose is the EGR Cooler Deaireation line

If you flushed that line with it still hooked to the Intake Manafold you would push water threw the EGR Cooler and Oil Cooler and Into the Front Cover

Some folks Take the cover off the Oil Cooler to EGR Cooler Port and flush right there because it is Forced to backflush the Oil Cooler only even add cleaner at that same spot so it doesnt delute cleaner as it does when you add cleaner anywhere else

Also if you do it at that Coolant port you can get good flow of water threw it vs that Really Small hose I know its a PIA but works alot better since you basicaly single out the Oil Cooler to flush

 

Ok, my coolant is full. I blew in the hose from the Degas to the EGR cooler and there is coolant going back through the little hose from the Coolant Radiator.
So I figured my EGR is not plugged, I do not know what happen when I tried it.

So from what I understand you can do quick backflush of the EGR and the oil cooler at the same time if you push coolant through the EGR degas line. If I want to do a good backflush of the oil cooler I would still do it from the cap of the oil cooler since there would be more volume.

At first I was scarred that if I push fluid in there it would go to the intake since that line is connected to the intake and hydro look the engine. But from what I saw, the EGR cooler coolant returns in part of the intake and the degas is on the top of it? I would probably understand better if I took my intake off.

 

Anyone have a thread link with instructions on how to do the coolant flush? I have never done that myself.

 

Follows is one of many threads on this subject. If you want more info use the search feature and you will find more threads than you can read in a lifetime on this subject.

https://www.ford-trucks.com/forums/6...tem-flush.html

 

While I was backflushing my oil cooler from the cap, I connected the water hose to the small hose going to the EGR, the one from the degas bottle. My two heater lines where disconnected.

The water would go up the EGR blue hose only if I have low pressure, as soon as I put more pressure, water will drain from the engine to heater tubes. The good thing is that I know the old coolant is out of my EGR, but it is not really backflushed, it was barely flowing.

From this experiment, I do not think you can really backflush your oil or EGR cooler through the small EGR degas line. First there is quite a restriction on that 3/8 line and water will use the easy way out either by the line from engine to degas bottle or to another open line.